20. Gleneagles Hotel

The Gleneagles Hotel in Scotland is a luxury countryside resort surrounded by rolling hills. Known as the “Riviera of the Highlands,” it opened in 1924. Guests enjoy world-class golf courses, a luxury spa, and fine Scottish dining. The hotel’s interiors reflect country-house elegance mixed with modern comfort. It is famous for hosting international summits and elite events. Outdoor activities include horse riding, shooting, and falconry. Gleneagles blends Scottish tradition with five-star luxury.