The Clock Tower / NW3

Designed by George Vulliamy, 1873, housing the local fire station until 1915. The campanile-style tower was originally taller, with a viewing platform for fire watchmen and topped by a pyramidal roof. Now apartments and commercial, grade II listed. Corner of Holly Hill and Heath Street, Hampstead, London Borough of Camden. 

(CC BY-NC-SA 2.0 - attribute: Photo by George Rex, non-commercial, share-alike.)