Imagine a beach where the sky is always blue, it’s never too hot or cold, the water isn’t filled with salt and pollution, and the surf is always perfect.

Welcome to Ocean Dome, the world’s only indoor beach! Ocean Dome is known as the world’s largest indoor water park with a retractable roof.

The air temperature is always kept around 30º C and the water temperature is kept at around 28º C.

The name Seagaia is a combination of the words “sea” and “gaia”, which is Greek for earth. It’s located near the Pacific Ocean on Kyushu Island.

Entrance costs $50 (which seems especially expensive given that there is a free, natural beach only 300 metres away).