The Pool at The Langham, London

"It also features a gorgeous spa, a 16-meter (52-foot) swimming pool, and a 24-hour fitness center"

"Rooms achieve a tasteful middle ground between modern and traditional, and there are extensive spa facilities, including a swimming pool"

"Insider Tip: Active types won’t want to miss the basement amenities: the former subterranean bank vault has been converted into a fitness room, complete with a 52-foot indoor swimming pool, sauna, and steam room"

"Notable features include the art deco Palm Court, a pioneer in the art of afternoon tea; Roux at the Landau, serving upscale French cuisine; a sleek spa and health club, with a pool set in a former bank vault; and a business centre with 24-hour support"

"The 9,000-square-foot-space includes a 51-foot swimming pool in the bank’s former vault, salt sauna and vitality pool, and state-of-the-art fitness center"