Dutch Docklands, a player in the world of floating technologies, (or making land where there was no land), has announced plans to build a $500 million floating golf course off the Maldives coast. While there are plenty of golf courses that claim to be “on” the water, this one would quite literally be atop the Indian Ocean.

World’s Most Expensive Golf Course

The concept is a series of man-made islands with one or more holes on each, linked by transparent undersea tunnels. Golfers walk or ride through these submerged pathways, taking in the seafloor sights while pondering which iron to use next. And the clubhouse? You’ll have to take an elevator to the sea bottom to get to it. At half a billion dollars, it will be by far the most expensive golf course ever built.