Roman Bath, London

A leisurely walk along Surrey Street will lead you away from the Strand and into Strand Lane, where you can catch a glimpse through a window of what was once believed to be a Roman Bath. The pool, measuring 15 feet (4.5 meters) in length, gained fame after its appearance in one of the Harry Potter films; however, it actually dates back to 1612 and served a purpose during Victorian times when claims of its Roman origins contributed to its popularity as a cold bath. At that time, there were two such baths on this site, but they ceased operation in 1893 when the Norfolk Hotel expanded its premises. What remains of them is now visible only through the window, but if you wish to examine it more closely, you can arrange an appointment (contact Westminster Council one week in advance, from mid-April to mid-October).