After a long day exploring Vienna’s historic center, Palais Hansen Kempinski is the ideal setting to decompress. Located on a quiet stretch of the city’s famed Ringstraße, the hotel features a tranquil spa complete with a sauna, steam bath, hydro pool and fitness center. There’s also plenty of treatments to choose from including intensive anti-cellulite programs, firming wraps and hot stone massages. The most luxurious abode of all is the Presidential Suite, which boasts a unique wall filled with lush green plants and an opulent black-and-white marble bathroom.