#17
The Sherlock Holmes Museum is a fan's delight: a Georgian townhouse dressed as 221B. Rooms brim with props from the stories-violin, chemical kit, Persian slipper-so it feels as if Holmes and Watson just stepped out. Staff in character keep the mood playful, while small case vignettes nod to Hound, Reichenbach, and more. It's intimate, closer to a set than a gallery, and best for readers or series devotees. Pre-book to dodge queues through the gift shop, expect stairs and tight rooms, and plan 20-40 minutes inside. Combine with a stroll to Regent's Park or a quick pilgrimage to Abbey Road nearby.