Some of London’s most interesting places are less obvious than the headline attractions. This guide covers a handful that each publish clear visitor information: unusual museums, tours of closed Underground spaces, a historic palace and gardens in south-east London and two quiet green spaces. It is the main hub for our hidden London coverage, and we will add supporting guides to it.
Details were checked on official sites on 2 October 2026. Check each official page before you go.
Hidden gems in London at a glance
| Unusual museums | Sir John Soane’s Museum (free); The Postal Museum and Mail Rail (ticketed) |
| Beneath the city | Hidden London tours of disused Tube stations (ticketed, ages 10+) |
| History and gardens | Eltham Palace and Gardens (ticketed) |
| Quiet green spaces | Brompton Cemetery; Victoria Tower Gardens |
Unusual museums
Sir John Soane’s Museum
Sir John Soane’s Museum is the former home of the architect John Soane, left as it was at the time of his death in 1837. Entry is free and there is no need to pre-book, but space is limited and you may have to wait. It is normally open Wednesday to Sunday, so check before a Monday or Tuesday visit. Free first-come tours of the Private Apartments run on some days and of the Drawing Office on others, subject to staff availability. Large bags are not allowed, flash photography is not permitted, and visitors are asked not to touch surfaces. Holborn station is a short walk away.
The Postal Museum and Mail Rail
The Postal Museum is ticketed, with a ticket including one ride on Mail Rail through the old postal tunnels. It recommends booking in advance and planning two to three hours. It is open Tuesday to Sunday, and the museum and Mail Rail are in two buildings on Phoenix Place, so head to Mail Rail first, arriving just before the time on your ticket.
Beneath the city
London Transport Museum runs Hidden London tours of disused stations, wartime shelters and time-capsule corridors on the Underground, led by expert guides. Tours are ticketed and open to guests aged 10 and over, and tickets are released several times a year, with a newsletter that gives 24-hour priority booking. Locations vary, so check the official page for what is on sale.
History and gardens
Eltham Palace and Gardens in south-east London combines a 1930s art deco mansion, built by Stephen and Virginia Courtauld, with the medieval Great Hall where Henry VIII spent his childhood. The gardens mix medieval remains with Arts and Crafts influences, and there is a café in the glasshouse. Mottingham station is a 15-minute walk away, and English Heritage lists a discount for those arriving by public transport.
Quiet green spaces
Brompton Cemetery is Grade I listed, the resting place of over 200,000 people, and a haven for wildlife. Victoria Tower Gardens is a small pocket of green space in Westminster with a number of memorials. Both are managed by the Royal Parks; see our best parks in London guide for larger options.
Planning tips
- Check opening days: several of these places close on Mondays or other weekdays.
- Book ticketed attractions in advance, especially at weekends.
- Travel light: Soane’s Museum, in particular, asks visitors not to bring large bags.
- For more ideas, see our things to do in London and free things to do in London guides.
FAQs
Is Sir John Soane’s Museum free?
Yes. Entry is free and you do not need to pre-book, though popular times can mean a wait.
Can children go on Hidden London tours?
Tours are open to guests aged 10 and over.
Sources checked
- Sir John Soane’s Museum: Plan your visit
- The Postal Museum: Visit us
- London Transport Museum: Hidden London
- English Heritage: Eltham Palace and Gardens
- The Royal Parks
- Featured image: Simon Burchell, Sir John Soane’s Museum, CC BY-SA 4.0 via Wikimedia Commons
