The Serpentine Gallery
A nice modern art gallery, near to the Serpentine. Too small to host a permanent collection, instead hosts temporary exhibitions which can last anything from a few weeks to over a year. Each summer a pavilion next to the gallery is designed by a different architect, which then ho

A nice modern art gallery, near to the Serpentine. Too small to host a permanent collection, instead hosts temporary exhibitions which can last anything from a few weeks to over a year. Each summer a pavilion next to the gallery is designed by a different architect, which then ho
Check the official site before travelling; hours and prices can change.
More museums

Sir John Soane's Museum
Free, tiny, deranged — Soane's own house preserved exactly as he left it in 1837.

The Wallace Collection
Free national museum in a Manchester Square townhouse — armour, Boucher, the Laughing Cavalier.

The British Museum
Free, vast, civilisationally heavy — go for one room, not all of them.
Source: wikivoyage