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Nijō Castle

Nijō Castle is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Nijō Castle rather than just read about it. In short: Nijō Castle (二条城, Nijō-jō) is a flatland castle in Kyoto, Japan. The castle consists of two concentric rings (Kuruwa) of fortifications, the Ninomaru Palace, the ruins of the Honmaru Palace, various support buildings and several gardens.

Nijō Castle — main illustration
Nijō Castle — illustration

Key takeaways

  • Nijō Castle belongs to engineering; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Nijō Castle to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Nijō Castle from memory before moving on to harder problems.

Reference excerpt

Nijō Castle (二条城, Nijō-jō) is a flatland castle in Kyoto, Japan. The castle consists of two concentric rings (Kuruwa) of fortifications, the Ninomaru Palace, the ruins of the Honmaru Palace, various support buildings and several gardens. The surface area of the castle is 275,000 square metres (27.5 ha; 68 acres), of which 8,000 square metres (86,000 sq ft) is occupied by buildings. It is one of the seventeen Historic Monuments of Ancient Kyoto which have been designated by UNESCO as a World Heritage Site.

History

In 1601, Tokugawa Ieyasu, the founder of the Tokugawa shogunate, ordered all the feudal lords in western Japan to contribute to the construction of Nijō Castle, which was completed during the reign of his grandson Tokugawa Iemitsu in 1626. While the castle was being built, a portion of land from the partially abandoned Shinsenen Garden (originally part of the imperial palace and located south) was absorbed, and its abundant water was used in the castle gardens and ponds. Parts of Fushimi Castle, such as the main tower and the karamon, were moved here in 1625–26. Nijo Castle was built as the Kyoto residence of the Tokugawa shōguns. The Tokugawa shogunate used Edo as the capital city, but Kyoto continued to be the home of the Imperial Court. Kyoto Imperial Palace is located north-east of Nijō Castle. The central keep, or tenshu, was struck by lightning and burned to the ground in 1750. In 1788, the Inner Ward was destroyed by a citywide fire. The site remained empty until it was replaced by a prince's residence transferred from the Kyoto Imperial Palace in 1893. In 1867, the Ninomaru Palace, in the Outer Ward, was the stage for the declaration by Tokugawa Yoshinobu, returning the authority to the Imperial Court (大政奉還). In 1868 the Imperial Cabinet was installed in the castle. The palace became imperial property and was declared a detached palace. During this time, the Tokugawa hollyhock crest was removed wherever possible and replaced with the imperial chrysanthemum. In 1939, the palace was donated to the city of Kyoto and opened to the public the following year. In the 21st century, typhoons have periodically caused sections of plaster to peel off the walls after exposure to rain and wind. It is generally believed that the karamon gate of Toyokuni shrine was originally built for Hideyoshi's Fushimi castle in 1598. When the castle was dismantled in 1623, the gate was first moved to Nijō castle, and then to the Konchi-in in Nanzen-ji. It was finally relocated to Toyokuni shrine in 1876 after the Meiji Restoration.

Fortifications

Nijō Castle has two concentric rings of fortifications, each consisting of a wall and a wide moat. The outer wall has four gates, while the inner wall has two, one of them in ruins. Originally, there were only three gates on the outer wall, but the Minamimon ("South Gate") was built in 1915 for a visit from the emperor. Two corner turrets survive on the outer wall as well. In the southwest corner of the inner wall, there are foundations of a five-story keep, destroyed by a fire in 1750. The inner walls surround the Inner Ward, which contain Honmaru ("Inner Ward") Palace with its garden. Ninomaru ("Second Ward") Palace, the kitchens, guard house, three storehouses, and a number of gates and several gardens are located in the Outer Ward, between the two main rings of fortifications.

Ninomaru Palace

The 3,300-square-meter (36,000-square-foot) Ninomaru Palace (二の丸御殿, Ninomaru Goten) consists of six connected separate main buildings and is built almost entirely of Hinoki cypress. The decoration includes lavish quantities of gold leaf and elaborate wood carvings, intended to impress visitors with the power and wealth of the shōguns. The sliding doors and walls of each room are decorated with wall paintings by artists of the Kanō school. The six main buildings have National Treasure Status, and other buildings in the palace complex have Important Cultural Property status. The castle is an excellent example of social control manifested in architectural space. Low-ranking visitors were received in the outer regions of the Ninomaru, whereas high-ranking visitors were shown the more subtle inner chambers. Rather than attempt to conceal the entrances to the rooms for bodyguards (as was done in many castles), the Tokugawas chose to display them prominently. Thus, the construction lent itself to expressing intimidation and power to Edo-period visitors. The building houses several different reception chambers, offices and the living quarters of the shōgun, where only female attendants were allowed. One of the most striking features of the Ninomaru Palace are the "nightingale floors" (uguisubari) in the corridors that make a chirping sound when walked upon. These are often incorrectly described as a feature to alert the presence of intruders, but it is actually just caused by clamps moving against nails in the wooden beams that support the floor. However, the design of the palace buildings do contain defensive features; for example, some of the rooms in the castle also contained special doors where the shogun's bodyguard could sneak out to protect him. The room sequence starting at the entrance is:

Yanagi-no-ma (Willow Room), Wakamatsu-no-ma (Young Pine Room) Tozamurai-no-ma (Retainers' Room) Shikidai-no-ma (Reception Room) Rōchu-no-ma (Ministers' Offices) Chokushi-no-ma (Imperial Messenger's Room) The Ōhiroma (Great Hall) is the central core of the Ninomaru Palace and consists of four chambers:

Ichi-no-ma (First Grand Chamber) Ni-no-ma (Second Grand Chamber) San-no-ma (Third Grand Chamber) Yon-no-ma (Fourth Grand Chamber) as well as the Musha-kakushi-no-ma (Bodyguards' Chamber) and the Sotetsu-no-ma (Japanese fern-palm chamber). The rear sections are the Kuroshoin (Inner Audience Chamber) and Shiroshoin (shōgun's living quarters). The main access to the Ninomaru is through the karamon, a court and the mi-kurumayose or "honourable carriages approach".

Honmaru Palace

… excerpt ends here. Continue reading the full article.

Illustrations

Nijō Castle illustration
Nijō Castle: Plan of Nijō Castle

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1. Great Eastern Gate (Higashi-Ōte-mon)
2. Guard house
3. Kara-mon
4. Honourable Carriage Approach
5. Ninomaru Palace 
6. Kuroshoin
7. Shiroshoin (shōgun's quarters)
8. Ninomaru Garden 
9. Pond
10. Kitchen
11. Meal preparation room
12. Storage buildings
13. Resting room
14. Toilets


15. Southern Gate (Minami-mon)
16. Cherry-trees grove
17. Plum-trees grove
18. West Gate (Nishi-mon)
19. Honmaru
20. Bridge
21. Honmaru Garden
22. Donjon
23. Waraku-an (teahouse)
24. Koun-tei (teahouse)
25. Great North Gate (Kita-Ōte-mon)
26. Green Garden
27. Gallery
Plan of Nijō Castle .mw-parser-output .col-begin{border-collapse:collapse;padding:0;color:inherit;width:100%;border:0;margin:0}.mw-parser-output .col-begin-small{font-size:90%}.mw-parser-output .col-break{vertical-align:top;text-align:left}.mw-parser-output .col-break-2{width:50%}.mw-parser-output .col-break-3{width:33.3%}.mw-parser-output .col-break-4{width:25%}.mw-parser-output .col-break-5{width:20%}@media(max-width:720px){.mw-parser-output .col-begin,.mw-parser-output .col-begin>tbody,.mw-parser-output .col-begin>tbody>tr,.mw-parser-output .col-begin>tbody>tr>td{display:block!important;width:100%!important}.mw-parser-output .col-break{padding-left:0!important}} 1. Great Eastern Gate (Higashi-Ōte-mon) 2. Guard house 3. Kara-mon 4. Honourable Carriage Approach 5. Ninomaru Palace 6. Kuroshoin 7. Shiroshoin (shōgun's quarters) 8. Ninomaru Garden 9. Pond 10. Kitchen 11. Meal preparation room 12. Storage buildings 13. Resting room 14. Toilets 15. Southern Gate (Minami-mon) 16. Cherry-trees grove 17. Plum-trees grove 18. West Gate (Nishi-mon) 19. Honmaru 20. Bridge 21. Honmaru Garden 22. Donjon 23. Waraku-an (teahouse) 24. Koun-tei (teahouse) 25. Great North Gate (Kita-Ōte-mon) 26. Green Garden 27. Gallery
Nijō Castle: Inner walls and moat of the Nijō Castle
Inner walls and moat of the Nijō Castle
Nijō Castle: Ninomaru palace of Nijō Castle
Ninomaru palace of Nijō Castle
Nijō Castle: Exterior view of the Ninomaru Palace
Exterior view of the Ninomaru Palace

Worked examples

Example 1 — a first encounter with Nijō Castle

Start with the simplest possible case. Write down what Nijō Castle claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Nijō Castle before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Nijō Castle ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Nijō Castle

In research
Nijō Castle appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Nijō Castle in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Nijō Castle is common in secondary-school and first-year university syllabi. It links to neighbouring topics Ashikaga clan, Buildings and structures completed in 1626, Buildings and structures in Kyoto, so understanding it makes those chapters shorter.
In everyday life
Look for Nijō Castle outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Nijō Castle in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Nijō Castle means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Nijō Castle out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Nijō Castle in simple terms?

Nijō Castle (二条城, Nijō-jō) is a flatland castle in Kyoto, Japan. The castle consists of two concentric rings (Kuruwa) of fortifications, the Ninomaru Palace, the ruins of the Honmaru Palace, various support buildings and several gardens.

Why does Nijō Castle matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Nijō Castle?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Nijō Castle.

Tags

  • Ashikaga clan
  • Buildings and structures completed in 1626
  • Buildings and structures in Kyoto
  • Castles in Kyoto Prefecture
  • Gardens in Kyoto Prefecture
  • Historic Sites of Japan
  • Important Cultural Properties (Japan)
  • National Treasures (Japan)
  • Special Places of Scenic Beauty
  • Tokugawa clan
  • Tourist attractions in Kyoto
  • World Heritage Sites in Japan

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