A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

The Grand Canyon of Texas.

Travelers exchange letters with woodland creatures at this mini post office.

148 feet long and in the middle of a verdant forest.

Legends surround this jagged rock formation in the New Mexico desert.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

These aggressively sustainable art homes look like something out of 1970's science fiction.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

The largest permanent Monopoly board makes one of the longest games even bigger.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

When ecosystems collide in the arid Southwest.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

This free, take-a-book shop seems like a trick but isn't.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.