Do look down: Scaling one of NYC's tallest skyscrapers

NEW YORK (AP) — As I climbed the narrow metal steps on the edge of the skyscraper, the safety harness that kept me attached to the building — nearly 1,300 feet up — kept clicking, like a roller-coaster heading toward its first drop.

Looking around on a recent fall day, I could see New York City spread out below me in the early morning light. To the south, One World Trade Center appeared at eye level in the distance. To the east, the needle spire of the Empire State Building. To the west, as our guide, Anissa Barbato, pointed out, even New Jersey looked good.

This was City Climb, an attraction opening Tuesday at 30 Hudson Yards, one of the city's tallest buildings. It gives thrill-seekers a unique perspective on New York that no observation deck could hope to match: No walls, no glass windows, no railings. Just skyline.

The $185-per-person experience starts with climbing groups of up to eight taken through a series of safety protocols, including a Breathalyzer test. They’re then outfitted in bright blue full body suits meant to ensure that nothing can fall off their person to the streets below.

Climbers are equipped with specially designed safety harnesses that let them ascend an outdoor staircase, from the first lookout known as the Cliff, to the top platform called the Apex, located 1,271 feet (387 meters) above 10th Avenue.

There, they can lean out over the edge and look down at the Empire State Building. City Climb will operate rain, snow or shine, but will close if the temperature drops below 23 degrees Fahrenheit (minus 5 degrees Celsius) or if there is dangerous weather in the area.

Setting off on our climb, my stomach tightened as soon as the gate saying “Restricted Area” opened onto the Cliff. My hands, tingling with nervous anticipation the night before,...