Royal Pump Room Museum
Built in 1842 over the sulfur wells (which are Europe's strongest and still have a pungent odor) that made Harrogate a 19th-century wellness destination, the pump room in this octagonal structure sold 1,500 glasses of water to spa-goers in its heyday (so no, designer water is not a modern phenomenon). Today, it houses the town's museum, with displays of bygone spa-treatment paraphernalia alongside an eccentric collection of 19th-century clothes, fine china, and bicycles.