Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

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

A Christian monastery stands on what was once a holy Incan temple.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Visiting dignitaries and Hollywood stars once stayed at this 1920s hotel, alongside ghosts that are said to haunt its corridors.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

The little bear in the "funny kind of hat" has made his way from London back to Peru.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

World's largest Christmas store.

This roadside attraction has been serving out its fair share of hearty folklore and chaos since 1858.

Bison, America's national mammal, are staging a slow comeback in Ohio's prairie parkland.

A chessmaster's dream destination.

This poignant display is now a memorial to these regionally extinct species.

This impressive scene portrays the elusive forest giraffe of Central Africa.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

Those belting out show tunes in this West Village piano bar might not realize it marks the site where Thomas Paine died in 1809.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Elevated freight railway turned wildly successful urban park.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

There must be a pun in this haystack somewhere...