Macabre astrological automaton clock dating to the late 1400s.

This replica of the Greek structure is in the heart of Nashville.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

This canyon is comprised of gorgeous waters and magnificent basalt columns.

One Greenland town turned itself into an open air sculpture gallery with the help of a series of traditional stone artworks.

No longer the only, but definitely the oldest, fountain in Greenland.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

There are ongoing efforts to preserve this village, the best known work of Egyptian architect Hasan Fathy.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

The city-sized home palace of one of ancient Egypt's most powerful rulers gives us a rare look into the lives of the epoch's rulers.

This unassuming tree stump reportedly traces its roots to the famous pharaoh queen's reign.

The king of U.S. high points towers over every other peak on the continent.

These markers are used to document elevation changes around the famed dam.

See Hoover Dam and the bypass bridge from a perspective usually off-limits to the public, and float the upper part of the Black Canyon National Water Trail.

What once sat in the world’s spotlight is today a largely disused ghost complex.

The 10,000 Torii shrine.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Haven for Cape Fur Seals, until the Ring of Death of jumping Great White Sharks arrives.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

The world's tallest aluminum statue is also the world's tallest image of a winged Virgin Mary.

Quito's historic, main square dates back to the 16th century.