A 131-year-old wunderkammer of Texas history.

Near the ruins of a Civil War coastal fortress lies the only known African refugee cemetery in the United States.

One of just five sand-floor Jewish synagogues in the world.

Over 1.3 million confiscated wildlife products fill this macabre menagerie of illegal animal specimens.

Dedicated to the victims of one of the deadliest hurricanes to strike the United States in recorded history.

The start of the group that straightened the teeth of a nation.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

This nine-story building can be played like an instrument.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

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

The "Seinfeld" diner.

A terrific purveyor of natural history objects and curios.

This quirky curiosity shop takes its cues from the world's bazaars.

When it opened during the final years of the embargo, all the drinks and cigars were free.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

This church was constructed by a shipbuilder and designed like an upside-down boat.

Once a menacing challenge for trailblazers, this trail is now the most scenic drive in Utah.

Walk the whole Mississippi River!

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Enormous lake at the bottom of a unique cave system.

A bronze sculpture honors the 12 black students who attended the first integrated public high school in the segregated South.