Gwyneth Paltrow’s new fully operational in-house spa in her Californian home has drawn internet’s attention. The Roman-style spa features a cold plunge pool, a hot tub, a steam room, a sauna room, handmade tiles, unlacquered brass fixtures, and rain showers. The spa is evocative of those found in some of the world’s most luxurious hotels and is inspired by Paris’s famous Les Bains du Marais.