An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

A floating cat sanctuary on an Amsterdam canal.

The oldest private residence in New York City.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

Where royalty waits in the height of luxury.

It might not be the prettiest pyramid in Egypt, but it may be the muddiest.

Some believe that this ancient mural depicts technology far ahead of its time, but in reality it's nothing quite out of place.

A hyper-remote desert cave dramatized in "The English Patient."

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.

Source for a sizable portion of Egypt's freshwater supply is more than an optical illusion.

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

Charnel house at the foot of Mount Sinai.

Ancient Egyptian relief, claimed to depict an electrical light.

Brightly painted boulders scattered throughout the Sinai Desert.

The once great capital of Egypt now crumbles forward as evocative ruins.

Even King Tut was intrigued by the glass of the Great Sand Sea.

The massive cave church of Cairo's Zabbaleen community is one of the largest Christian churches in the Middle East.

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

One of the most well-preserved temples of ancient Egypt.

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

A lake with hundreds of ancient skeletons surrounding it. The surprise is what killed them.

This abandoned fort is said to be the most haunted place in India, so much so that entry is prohibited after sunset.