This elaborate towering structure was once famed for its revolutionary height.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

This massive roadside mascot was the first version of the giant to illustrate his butt.

A winged-helmed, sword-brandishing tribute to German Americans.

One man's ambition created this psychedelic log home.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

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

A spiritual vortex among the red rocks in Sedona.

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.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

A geological mystery on Camelback Mountain.

Enormous burial mounds of ancient emperors.

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

A 125-meter long "tribute to the Brazilian people."

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Charleston's historic city jail once held everyone from pirates to Civil War POWs.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

One of the oldest living oak trees in the Southeast.

This historic observatory contains the world's oldest refracting lens telescope.

Come for the flowers, stay for the bats!

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Tubing through a cave lit with glowworms is a magical underground experience.