2 Willow Road is the Hampstead house that architect Ernő Goldfinger designed for himself in 1939. The National Trust preserves it as a compact modernist time capsule, with built-in furniture, clean lines, and original works by artists including Henry Moore and Max Ernst.
The house is especially rewarding if you like architecture, design, or the arguments Londoners have about both. It pairs neatly with a walk on Hampstead Heath, just up the hill.