Once four separate apartments, Fallon and his wife, Nancy Juvonen, who owns production company Flower Films with Drew Barrymore, undertook an extensive renovation, turning it into one huge 4,950-square-foot (460 sqm) family home.

While the exterior offers plenty of brownstone kerb appeal, the interior is decorated with vintage wallpapers, eclectic furnishings and colourful accessories that make it truly one-of-a-kind.

Inside, you'll find a warren of rooms and corridors over three floors, including six bedrooms and two bathrooms.

13 of the most extraordinary celebrity homes ever built