A view of the 415-square-meter platform.[Photo by Lin Hui/ China Daily]

Needless to say, the thrill exceeded visitors' expectations.

They paid for less.

This was at more than 1,000 meters over the ground.

Um ... don't look down?

Right.

Glass bridges and platforms have been proliferating nationwide in recent years.

Hunan province's Shiniuzhai National Geopark opened the aptly named Brave Man's Bridge 130 meters above the ground last autumn, weeks after a 900-meter-long bridge opened in Yunnan province. Hunan's Tianmen Mountain became an early mover of people over transparent floorboards at jittering elevations when it built a 1,430-meter-high, 61-meter-long glass walkway half a decade ago.

Beijing's "UFO" is just the latest opportunity to walk above our world to land in China－where more places to go are using vertigo to give tourism destinations an adrenaline shot in the arm.

That is, more reasons to say: Seriously. Don't look down.

But, again, that's the point.

So, we do.

Hey, we all need to sometimes stare down mortality－from above.

Don't we?