The Spa & Health Club of the Eurostars Madrid Tower hotel sits on the 29th floor of the skyscraper at Paseo de la Castellana 259, 120 metres above the ground. Its 45-minute thermal circuit includes a hydromassage bathtub, a sauna with panoramic views over the city and a steam bath, for a maximum of eight people at a time. Visitors from outside the hotel pay 45 EUR (hotel guests 30 EUR); booking is required, a swimming cap is compulsory and access starts at age 16.