Old War Office Building (The OWO) — Place photograph (1 of 3)

Old War Office Building (The OWO) — Place photograph (2 of 3)

Whitehall, London SW1A 2EU, United Kingdom

Old War Office Building (The OWO)

Museum & collection

Place photograph

4.6

Wildland

1–2 hours

Time

Check

Cost

Atmospheric

Feel

Urban historicHistory lovers

Why it's Wildland

4.6

Whitehall’s former Old War Office has been recast as The OWO, while its wartime past remains part of the building’s story. The hotel’s official account describes the site as a Second World War intelligence hub, including work connected with Operation Mincemeat. Heritage tours are promoted, but access should be arranged rather than assumed.

This is a compelling piece of London’s built heritage rather than a wild landscape: a landmark government building whose former role in wartime intelligence gives it a strong sense of place. Its appeal lies in the history and architecture, with visitor access apparently tied to organised experiences.

Atmospheric · Grand

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Whitehall, London SW1A 2EU, United Kingdom

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The experience

The strongest supported visit is an arranged heritage tour of the former War Office. The OWO’s official material also connects the building with wartime intelligence and Operation Mincemeat. Confirm current tour access and arrangements directly before making plans.

Things to do

Arrange a heritage tour

The OWO promotes heritage tours led by members of its Heritage Committee. Confirm dates, booking requirements, access and tour details with the venue before visiting.

Explore the building’s wartime intelligence story

The hotel describes the former War Office as a Second World War intelligence hub, with work connected to Operation Mincemeat. Ask whether these subjects are covered on the tour available to you.

Make a day of it

Quick escape · About 1–2 hours; confirm the tour duration

Quick Escape: Book a heritage tour

01
Check with The OWO whether a heritage tour is available on your preferred date.
02
Arrange access before travelling; the supplied sources do not establish walk-in entry.
03
Join the tour and hear about the building’s former role and wartime intelligence connections.

Verified history

The building now known as The OWO was formerly Britain’s Old War Office. Its operator describes it as a Grade II* Edwardian Baroque landmark and says it served as a hub for intelligence activity during the Second World War. The operator specifically connects the building with Operation Mincemeat, the 1943 deception operation, and says key agents involved worked there. These details are based on the supplied operator source; further historical claims are not established by the supplied material.

Hidden details

Operation Mincemeat connection — The hotel’s official account says key agents involved in Operation Mincemeat worked in the building, which it describes as a wartime intelligence hub. Ask whether the heritage tour covers this connection.

When to go

· Arrange a tour time directly with the venue; no preferred time is evidenced.

The supplied sources describe a year-round programme of events and openings, but do not confirm a regular public-tour schedule.

This is an urban heritage visit. Check tour arrangements and access before travelling; no weather-specific information is supplied.

What to look for

On a booked tour, look for the building’s historic character and ask the guide about its former government and wartime intelligence role. Specific interior features to seek out are not established by the supplied sources.

The story

War & battle, Industry

Best time to go

Year-round, subject to tour availability and arrangements.

No seasonal advantage is established. Check tour dates and availability before travelling.

How long to spend

1–2 hours

Perfect for

History lovers

Before you go

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Address

Whitehall, London SW1A 2EU

Google rating

4.7 · 636 reviews

Practical information

Opening & access

The former Old War Office now forms part of The OWO, a hotel and destination. A heritage tour is described by the operator, but general public entry and tour availability are not established by the supplied sources. Check with The OWO before visiting; do not assume the hotel’s interior is open for walk-in access. Access arrangements are unconfirmed. Check before visiting; do not enter private land or restricted structures.

Check before visiting

Parking

Check before visiting. No parking information is established by the supplied sources.

Check before visiting

Toilets

Check before visiting.

Check before visiting

Food & drink

The OWO advertises dining and bars; access and availability should be checked in advance.

Check before visiting

Dogs

Check before visiting.