London has more museums than you have excuses. The British Museum is the obvious choice, but have you been to the Sir John Soane’s Museum? It’s like falling into a hoarder’s treasure chest from the 1800s—full of random sarcophagi and tiny corridors.
Pro tip: The Natural History Museum is a wet-day classic, but go for the architecture, not just the dinosaurs. The main hall looks like a cathedral for science. And hey, it’s free. What else can you do for free that feels this grand?
The Indoor Market Magic
You know those outdoor markets that turn into slip-and-slides in the rain? Skip them. Head to Borough Market, but wear a hood because the whole place is under a massive roof. The smell of grilled cheese and fresh oysters will hit you like a warm hug.
If you want something quirkier, try Maltby Street Market under the railway arches. It’s like a secret food alley where the rain sounds like a drumbeat overhead. Cheap thrills, great food, zero umbrella wrestling.