A rare labyrinth-style path carved into a historic hill.

This supermarket offers shoppers a window into the past alongside their groceries.

This Michelin-starred restaurant sheds light on a rare period of cultural and culinary tolerance in Cordoba’s past.

In 1954, two enormous earthquakes occurred just minutes apart, resulting in prominent scarps that extend for miles along the range fronts.

A fire lookout atop a glacial pinnacle is reached by climbing three vertiginous flights of stairs.

An out-of-the-way state park in Oregon that features both a picturesque waterfall and the ruins of a hydropower plant.

A picturesque example of brute-force engineering conquering nature.

This large artificial waterfall in Washington state was merely an incidental byproduct of a technological megaproject.

It's safe—and permitted—to walk across these twin natural sandstone arches.

The longest navigable underground river in the United States is home to countless blind and albino animals.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

A former plant in one of the hubs of U.S. steelmaking has been turned into this museum celebrating the history of American industry.

From the late 19th century until the 1960s, these stone-lined "stumps" were a popular place for people to air their views on local and international issues.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

One of the first intercontinental ballistic missile sites in the United States.

This underwater graveyard commemorates a group of murdered 16th-century missionaries.

What many consider the original prime meridian and westernmost point of the old world.

Historic home of America's sweetheart sharpshooter, Annie Oakley.

Built by the patriotic residents of Boonsboro in a single day.

This four-story steel sphere in Maryland was used to test biological weapons.

Over a thousand feet beneath the Detroit streets is a subterranean metropolis few are allowed to enter.

Equipped with thousands of LED lights, this geodesic dome-shaped stadium is an engineering delight.