engineering

The Lost Close

The Lost Close 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 The Lost Close rather than just read about it. In short: The Lost Close is a historical underground site and venue located at 1A Parliament Square, Edinburgh, Scotland. Hidden beneath the old Edinburgh police chambers and courtroom buildings, the space was rediscovered in the 21st century and opened to the public as a visitor attraction and venue.

Key takeaways

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

Reference excerpt

The Lost Close is a historical underground site and venue located at 1A Parliament Square, Edinburgh, Scotland. Hidden beneath the old Edinburgh police chambers and courtroom buildings, the space was rediscovered in the 21st century and opened to the public as a visitor attraction and venue. It showcases layers of the city's urban archaeology, including remains from the Great Fire of Edinburgh (1824), part of the original Edinburgh Police Station, and the vaults of Scotland's first bank. The venue offers immersive historical storytelling, guided whisky and gin tastings, walking tours and exhibits such as a rare 19th-century Crossley gas engine.

History The site is situated in Edinburgh's historic Old Town, in a building that has served multiple functions over centuries. Much of the area around Parliament Square was devastated by the Great Fire of Edinburgh in 1824, which destroyed the buildings east of the square and led to redevelopment and expansion of civic facilities. In 1846, new courtroom and jail cell facilities were opened, part of which included what is now The Lost Close. A subterranean passage and series of vaults remained hidden for decades and were rediscovered during refurbishment works in the 2010s.

Rediscovery

The Lost Close was rediscovered in 2019 during the refurbishment of the former Edinburgh police chambers and courtroom buildings to create CoDE Pod Hostel. During the renovation, construction teams uncovered a series of bricked-up vaults and passageways beneath the building, including structures believed to be part of the city's early police infrastructure and possibly linked to the Bank of Scotland's original vaults.

In 2025, a separate discovery was made in the attic of the building: a rare 19th-century Crossley gas engine, believed to be the second oldest of its kind in existence. Originally used for powering machinery in the Victorian era, the engine had been forgotten for decades. It was transported to The Lost Close and restored for public display as a centrepiece exhibit.

Present day

The Lost Close opened to the public as an underground cultural and hospitality venue. Today, it offers:

Guided whisky tastings featuring premium Scotch whiskies. Gin tastings and local beer tastings Historic walking tours It is part of a wider regeneration of historic spaces by CoDE Concepts, a company that also operates The CoURT hybrid hotel above.

References

Illustrations

Worked examples

Example 1 — a first encounter with The Lost Close

Start with the simplest possible case. Write down what The Lost Close 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 The Lost Close 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 The Lost Close 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 The Lost Close

In research: The Lost Close 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 The Lost Close 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: The Lost Close is common in secondary-school and first-year university syllabi. It links to neighbouring topics Buildings and structures in Edinburgh, Royal Mile, Subterranean buildings and structures, so understanding it makes those chapters shorter.
In everyday life: Look for The Lost Close 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 The Lost Close in 20 minutes

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

Frequently asked questions

What is The Lost Close in simple terms?

Why does The Lost Close 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 The Lost Close?

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 The Lost Close.