Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The yawning maw of this pagan visage is said to bite off the hands of liars.

A battle between nature and architecture in the Cambodian jungle.

An artist's cute bronze subway sculptures belie his violent artistic past.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Two thousand artifacts from around the world collected by one woman who loved to travel.

The most confusing clock in New York.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Hear the quietest sound from across the dome.

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

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

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

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Elevated freight railway turned wildly successful urban park.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

The embalmed remains of the communist leader lie within a custom crystal coffin.