One of the oldest surviving purpose-built operating theatres in the world has a whole museum devoted to it a stone’s throw away from London Bridge. It’s uniquely positioned in the roof of a baroque church, not intentionally mind, but because the wards of St. Thomas’ Hospital had been built around St. Thomas’ Church. Its elevated location was deliberate though, as plenty of natural light streams through a skylight, and being on the same level as the women’s ward meant easy access to and from surgery. As well as wandering through the theatre and imagining what having an operation may have been like in the 1800s (without anaesthetic or antiseptics) you can expect to see displays of old surgical instruments that nowadays look better suited to a horror movie set. Entrance is £6 for adults, £3.50 for children under the age of 16.