Do look down at this new $3.3 billion attraction in New York City

By Fiona Jackson via SWNS

A skyscraper in New York has unveiled a dizzying new tourist attraction – a mirrored, glass-bottomed observation deck 1,200 feet above the ground.

It spans the top four floors of One Vanderbilt,the fourth tallest building in Manhattan.

The attraction, named Summit, includes an outdoor terrace accessible by fully transparent elevators.

Each elevator is 90 square feet, making them the largest glass floor elevators in the world.

They can travel up to 1,000 feet in just 42 seconds.

For those with strong stomachs, there are also glass-bottomed booths overlooking Madison Avenue from 1,063 feet in the air.

Inside is a walk-through art installation called 'Air' where viewers experience a series of mirrored rooms that infinitely reflect views of the city through the walls, floor and ceiling.

Created by Kenzo Digital, the exhibit combines lighting, sound and production design to completely immerse visitors in the Big Apple's skyline from the 91st to 93rd floors.

A Nordic-themed lounge and café called Après will serve snacks and cocktails, with interiors courtesy of architecture studio Snøhetta.

Summit is a $3.3 billion development designed by architecture firm Kohn Pedersen Fox (KPF) at the top of the fourth tallest skyscraper in NYC, which is at 1,401 feet high.

It will open to visitors on October 21, with prices starting at $39 for adults.