Since capsule hotels were popularized in Japan in the early 1980s, budget-minded global travelers have got used to cramming into their tiny, ergonomically designed rooms everywhere from airports to city centers. Now, capsule hotel rooms have taken to the water at the Huis Ten Bosch theme park in Nagasaki Prefecture. /VCG Photo

The floating balls are made up of two floors. The lower level is designed as an accommodation cabin while the upper is an observation deck. Each capsule can accommodate two people. /VCG Photo

The floating capsule hotel will be put into service this summer and a ship will be used to tow the rooms between the theme park and a nearby island, park administrators told The Japan Times. /VCG Photo