After Sierra Leone's railways shut down in 1974, a collection of engines and other artifacts spent decades hidden away in this old workshop—now a museum.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Golden Gate Park's historic collection of plants.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

Lucha Libre (Mexican Wrestling) themed taco shop.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

This cheerfully-named branch of the Chicago River is the fetid result of years of blood, entrails, and meatpacking waste.

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

A display of magnificent stained glass windows is the first exhibit of its kind.

These pretty kitties killed and ate as many as 135 railway workers.

While there are no actual snakes in the history of this crooked road, there may be a number of dead horses.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

A mysteriously dark cemetery monument fuels stories and legends galore.

The oldest university museum west of the Mississippi retains its 19th century feel.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

A unique geological area spiked with wind-carved rocks that resemble teepees.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Albuquerque found the perfect use for tumbleweeds at Christmastime.