The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

The uniquely-designed winter home and sculpture studio of Anna and Archer Huntington.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

Yo, Adrian!

This elaborate towering structure was once famed for its revolutionary height.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The first American department store, and home to the largest operating musical instrument in the world.

Dr Barnes' $25 billion private collection of art and arboretum.

World's first "penitentiary," meant to be humane, drove men insane.

An office built to look like a giant basket.

The world's largest Holstein cow.

One man's quest to save his town with a trail of record-breaking sculptures.

Even Henry David Thoreau found this glacial pothole irresistible.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

A giant open-air sculpture made of over 200 full-sized boats.

Experience a charming 1930's version of "infotainment."

The drama of nature in full effect in this Nevada State Park.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

The nation's second-ever First Lady urged the founding fathers to "remember the ladies."

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

This impressive Boston holy house is the American mecca for Christian scientists.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

A former waterfront market is now in the center of town due to some interesting Boston engineering.