The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

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

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

Look closely and you’ll notice that the color changes a third of the way up the tower.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

The world's largest piece of copyrighted artwork.

An enormous, inside-out glass globe built in 1935.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Two thousand artifacts from around the world collected by one woman who loved to travel.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

100 massive sculptures in the Hudson River Valley.

2300-year-old Roman road connecting the empire.

Massachusetts memorial to murder victim Elizabeth Short near the spot where she was born.

Second largest wastewater treatment plant in the country.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

This natural rock formation features seemingly unnatural vertical ridges that have been blamed on elves.

Plot your trip through the city on the sidewalk.

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.