Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Metro station with a claim to rock n' roll fame.

Cold war icon and onetime "hole" in the iron curtain.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The largest prehistoric ruins south of the Sahara, once a powerful center of international trade.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

Mined to a depth of 240 meters with a perimeter of about 1.6 km, the largest hand-dug excavation in the world.

Largest cave system in Africa.

South Africa's postal service began with a letter left in a boot beneath this tree.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

Haven for Cape Fur Seals, until the Ring of Death of jumping Great White Sharks arrives.

The South African dialect's complex history is immortalized in stone, in one of the world's only monuments dedicated to a language.

The original goat tower, the one that started it all.

This historic observatory was established to keep shipwrecks from littering the Cape of Good Hope.