Austria, July 8 2016 - Austrian engineering company Doppelmayr/Garaventa—better known for rigging gondola systems for ski areas in the Swiss Alps—has now completed a record-breaking tramway across Vietnam’s Ha Long Bay.

The Ha Long Queen Cable Car is suspended by a pair massive concrete towers—two of the tallest in the world—with the larger tower rising to 620 feet. But the tram cars themselves are the largest ever constructed. Each double-decker car is larger than some New York apartments—carrying 230 people on each 15-minute trip across the bay.

Ha Long Bay is an Unesco world heritage site renowned the world over for its beautiful 1,600+ limestone islands. The area welcomes roughly 7 million tourists a year.

The more than $282 million tramway was built to connect the Bai Chay district of Ha Long City to one of the world’s largest ferris wheels.