The museum within the Kom-Ombo Temple complex houses mummified crocodiles and mummified crocodile eggs.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

Ozymandias’ time-keeping temple.

This North African stone complex is considered to be the oldest astronomical observatory on Earth.

The largest known Ancient Egyptian obelisk.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

An underground network of massive stone arches and their skylit vaults support ruins of portico structures above.

A pair of connected skyscrapers form this symbolic gateway.

In the hinterlands of Serbia's capital, a giant reflective mushroom houses an aeronautical history of the former Yugoslav republic.

The unusual sculptures are believed to be powerful political symbols.

A misnamed well, with a deep dark past.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

This small bronze pyramid marks the center of Belgrade, but some say it is a Masonic symbol.

This striking, historic hotel has major Wes Anderson movie energy.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Ancient catacombs form the foundation for this Rococo orgy of a church.

The stunning interior of this Gothic church is covered in ornate gold details.

A hidden three-foot-wide house separates these two regal churches.

Elaborate tile work in this railway station tells the story of Portugal.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.