An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

A terrific purveyor of natural history objects and curios.

A sobering account of the vibrant multicultural neighborhood that was destroyed under apartheid.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

The nude sculpture on this fountain shocked conservative townsfolk when it was first unveiled, but not as much as the dead body found in it decades later.

This whimsical seashell-shaped place of worship was designed to blend into its surroundings.

Uninhabited islet in the Caribbean is the sanctuary of giant lizards.

This abandoned boat was left in place thanks to its rotting beauty.