The castle still holds traces of the abandoned Roman fort it was built atop.

The oldest badlands in North America, Makoshika State Park takes it name from the Lakota words for broken land.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

Recently restored menagerie of Victorian-era beasts.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

In a pedestrian tunnel on North Carolina State’s campus resides an expressive and artistic free-for-all.

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.

A replica of a 7th-century church hides in plain sight in the middle of the concrete jungle.

New fungal and bacterial species call this deadly lake home.

This giant boulder is sandwiched between apartment complexes in upper Manhattan.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

A small Wyoming town is home to the state's oldest-operating soda fountain.

At the time of its completion, it was the tallest dam in the world.

This popular park is home to a sea serpent sculpture that now overshadows the twisted history of its creation.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

Nine bronze hands protruding from a wall honor the student uprising that led to the fall of Czechoslovakia's Communist government.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

The oldest garden in Prague, once part of an medieval orchard.

Monument to a suicide protesting the Soviet invasion.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

The scene of the largest surrender of Confederate troops at the end of the American Civil War.

A surreal statue honoring Prague's favorite literary son.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.