The Genius Treasure Museum is weird,funny, and exquisite in the weirdest way. It is a collection of artworks and objects found at car boots sales and flea markets, and nearly always made by unknown amateur creators but full of character and quirks.
This unique museum of outsider art is very informal,located in a repurposed church/former recording studio that hosted the likes of Depeche Mode and The Pixies in the 1990s. The collection is totally free and you're offered a cup of tea upon entering, and welcome to take photos and pick things up. While the collection only takes up one room, or there are a lot of treasures packed into the space,and more added all the time.
Source: atlasobscura.com