A rare wooden coffin set vertically into the Gothic arch of an ruined church.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

A cheeky architectural easter egg.

Take a stroll through the hellish grotesques of Hieronymus Bosch in this elaborate Netherlands church.

The unusual burial monument of Arizona's first governor.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

A mysterious "wedding cake" castle in the middle of the urban desert.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

A spiritual vortex among the red rocks in Sedona.

Limestone caves with spectacular showcase chambers.

An homage to everyone's favorite prehistoric cartoon family.

Washington's iconic carousel has a nice piece of Civil Rights history.

Go take a picture with the inventor of the daguerreotype photographic process.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

Created by one of England's most prolific labyrinth designers, inspired by Bath city history.

A historic Georgian building and warm springs.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.