The abandoned tower is the last remnant of Lusaka's first major power plant.

This fascinating cave is packed with prehistoric rock art and Stone Age tools.

A series of caves within the gorge hold artifacts from the Stone Age.

This little-known colonial road helped determine the Zambia-Tanzania border.

The forgotten remains of the first steamship that launched on Lake Tanganyika.

One of the largest concentrations of rock paintings in Southern Africa.

Arrogance and quarreling are forbidden near these three sacred waterfalls.

The petrified remains of 150-million-year-old trees can be seen in and among the houses of the local villagers.

The skull of an ancient hominid was discovered at this spot.

An obelisk marks the spot where a British explorer's heart was buried before the rest of his body was transported to England.

This slowly crumbling mansion was home to one of East Africa's richest and most powerful slave traders.

Now abandoned, this stone church was part of the missionary efforts that initiated the Christianization of Zambia.

A memorial in the middle of a roundabout marks the spot where German forces formally surrendered, finally ending World War I in Africa.

A stone memorial marks the spot where the fighting of World War I finally ceased—three days after the armistice was signed in Europe.

A secluded natural oasis hidden deep along a rainforest trail.

There is only one place in the world where the corners of four nations come together.

The giant squid's 27-foot-long corpse lies preserved within a Sarasota aquarium.

FDR's Art Deco hospital tower was hopelessly inefficient.

This former asylum for Black Americans is haunted by its history of violence and racism.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

This sacred, circular cave is lined with pools so clear and still that it's hard to tell where the water begins.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.