Located inside the Radisson Hotel in Berlin sits a 250,000-gallon saltwater aquarium designed and constructed by ICM. It features an elevator that guests and visitors can ride up through the center of the aquarium.

Orlando, Las Vegas, Berlin? The idea of hotels as attractions started gaining ground with Disney’s Michael Eisner in the early ’80s and has been growing in popularity ever since. Hotels are more than just a place to rest and recharge after a long day. Europe is embracing this trend, and architects, designers and others in the hospitality industry are propelling visitor expectations to new heights.