The outcropping is graffitied with the name of the beloved musical Muppet television series.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

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

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

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A series of playful yellow penguins share a serious message about the environment.

The fading, forgotten remains of a once bright and booming factory.

The first permanent memorial to a unique secret weapon of World War II.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

This sanguine boulevard was named after a deadly cowboy bar fight.

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

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

A Wild West jailhouse that slid down the mountainside.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

This abandoned horse racing track was an exercise in hubris from its inception.

Take a monster truck tour around an ostrich farm in the middle of the desert.

A natural history wunderkammer in the middle of the desert.

The wreckage of a deadly bomber plane crash can still be found near an Arizona peak.

A mistaken marker makes an erroneous claim along the historic Old Divide Road.