One of the last refuges of the endangered eastern lowland gorilla.

This breathtaking island on Rwanda’s Lake Kivu is a haven for thousands of fruit bats.

The home of half the world's population of critically endangered mountain gorillas.

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

This windmill has been grinding pigments for traditional paints for more than 200 years.

Along a California highway is a kind of Jurassic Park made of metal.

The statue of a cursed knight is said to come to life every 100 years.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

2300-year-old Roman road connecting the empire.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

The "Great Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

An unremarkable wooden wheel built into the side of one of Rome's oldest hospitals was part of a policy to reduce infant exposure.

Plaques on its facade commemorate the Tiber's most destructive deluges.

A small but very fascinating fountain in the center of Rome with four books and a deer carved.

This clifftop arch is a natural stunner.

This bronze boy sits on one of Capri's rocky cliffs, waving at the passing boats.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Erotic art covers the walls of the largest ancient pleasure palace.

The walls and streets of the ancient city are peppered with penises.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

Drink wine handed out through a window as part of an age-old tradition.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.