For pure architectural drama, the recently built Top of Tyrol observation deck in Austria ... even more vertiginous viewing platform at the Grand Canyon Skywalk, finished in 2007.

Explore the list of 9 terrifying skywalks around the world, where thrill seekers flock to capture mesmerizing vistas of the stunning landscapes and cities below. From the sky-high walkway of the Grand ...

This full-day Grand Canyon tour run by Comedy on Deck Tours gives guests several options to customize their experience, such as a VIP Skywalk tour. But there is also a great base package.

The Grand Canyon has topped ... the on-site astronomy program at Providence Canyon State Park is another excellent activity ...