A peg-legged tightrope walker did not reveal his name as he was dying, and so he was buried as “Rope Walker."

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

A natural formation that resembles a camel resting in the New Mexico desert.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

This popular pilgrimage site offers a hole filled with holy healing dirt.

A unique geological area spiked with wind-carved rocks that resemble teepees.

Seller of surplus nuclear research materials.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A high point in Vancouver kitsch.

Leave a button on the jacket of this iconic Seattle clown.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

World's second largest particle accelerator, where nature reveals its secrets.