Nicknamed "Karri Knight," this Eucalyptus was planted in 1895 and stands at 72 meters.

A small sanctuary carved into the mountainside near the tallest point in continental Portugal.

These 400-year-old ruins are all that's left of the monastery where Ines de Castro was assassinated by the King of Portugal.

Entire apothecaries are on display at this Lisbon museum, which explores the history of medicine.

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

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

Located near Cairo's El Korba district, the abandoned mansion continues to inspire mystery and rumor throughout the city.

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

A strange aquarium with stuffed fish, and almost no water for them to swim in.

A network of ancient Egyptian tombs built into the cliff face along the Nile.

Ancient Egyptian relief, claimed to depict an electrical light.

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

The deadliest diving spot in the world is also a stunning geological marvel.

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

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

In Egypt's expanding metro area, many of the neighbors are dead.

A preserved oasis with traditional Andalusian-style architecture and beautiful views of the Nile.

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

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

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

An alien landscape of chalk-rock in the Egyptian desert.

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

An endless sea of white conical domes.

Ozymandias’ time-keeping temple.