A church of bones, decorated with 40,000 human skeletons.

What remains of the summer palace of King Kamehameha III.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

This simple, broken column marks the final resting place of one of America's most famous explorers.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

This replica of the Greek structure is in the heart of Nashville.

This little slice of old Jerusalem in Oklahoma is the evolution of a century-old passion play.

These massive mitts are made of 30 tons of devotional bronze.

Final resting place of Geronimo, Quanah Parker, and the first atomic gun ever fired.

A funhouse dummy that turned out to be a real life mummy, Elmer McCurdy is an urban legend come true.

American bison herd descending directly from a Bronx Zoo breeding program that saved the species from extinction.

Nature's biggest mammal swims in landlocked Oklahoma.

Not quite the menace it once was, this monster still has some chops.

A statue erected on an infamous cliff where young boys would hold dangerous "pee offs" to prove their mettle.

A small island with no monkeys but plenty of military ruins.

The largest volcanic caldera in Japan holds an entire city in its maw.

Elaborate series of tunnels where traces of mass suicide are still visible.