Human ancestor’s 3.6 million year-old footprints.

This rare volcano spews the strangest and (literally) coolest lava in the world.

This urban park is home to monkeys and a number of endangered plants.

The farmhouse owned by the Danish author who wrote "Out of Africa" is now a museum honoring her legacy.

Life and death are on parade at the most reliably perilous site of “the Great Migration.”

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

The largest known Ancient Egyptian obelisk.

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.

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

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

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

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

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.

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

Ozymandias’ time-keeping temple.

Cathedral carved out of salt, located a mile below the earth's surface.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Abandoned since the 1950s, the streetcar lane beneath the heavily trafficked bridge lays empty and unused.

Once home to more than 50 displays of freshwater fish.

A former Canadian automobile ferry mysteriously appeared in the Black River 20 years ago, and now it quietly rusts away.

Inside the unassuming cemetery chapel is a magnificent stained glass window and mosaics.

Faces carved into the cliffs create an otherworldly walking trail.

This small plaza encourages people diagnosed with cancer to never give up hope.