Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

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

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

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

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

Huge stone depressions which may have acted as an Incan agricultural experiment.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

The highest tropical mountain range in the world is in Central Peru, home to a vast array of exotic and quirky plants and animals.

This striking art museum holds an amazing series of curiosity cabinets.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

The final resting place of New Orleans' most famous voodoo priestess.

The curiosities and wonders of pharmacy in a delightful historic building.

An emerald-green grotto just a short trip from Austin.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.

The bears of Bern have been a city highlight for over 500 years.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

A Bibliophile's Dream.

The 606 is a decade in the making.

All of Chicago's wood-paved streets are long gone but two alleys remain.

Odd, decrepit fountain honors Chicago author who had mixed feelings about his hometown.

Where old school Polish Chicago and young hipster Chicago live side by side.

The palatial McDonald's that inspired Wesley Willis.