House of Commons Strangers' Gallery
When called, you proceed from St. Stephen's Hall to the Central Hall, and then upstairs. You must leave all items (bags, cameras, mobile phones, writing and written material) outside and then proceed through to the Strangers' Gallery. Upon entry, you can pick up a copy of the pro

When called, you proceed from St. Stephen's Hall to the Central Hall, and then upstairs. You must leave all items (bags, cameras, mobile phones, writing and written material) outside and then proceed through to the Strangers' Gallery. Upon entry, you can pick up a copy of the pro
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