The preserved wheel ruts of El Camino Real de los Tejas, an 18th-century Spanish colonial road across America's Southwest.

This grandiose staircase was part of the revival of a medieval Spanish architectural style combining Christian and Islamic influences.

A multicolored mineral mound dribbles piping hot spring water right off the side of a highway.

This abandoned building, which is the second-largest structure on the Maltese island of Comino, has a complicated past.

The remote graves of a Scottish family who died of thirst while attempting to reach St. George.

After several centuries as the home of coastal defenses, this island is full of history—and maybe ghosts.

A single block in this stone staircase to the temple is mysteriously always wet.

A stunning example of traditional salt production set against a dramatic volcanic landscape.

The grave of William Rosenberg, founder of Dunkin Donuts (now Dunkin') with shops coast to coast in the US and 42 countries worldwide.

A 17-foot-tall cutout of the Texas-born actor stands alongside the highway.

This octagonal rotary jail built in 1889 now serves as a visitor's center.

Here lies Hattori Hanzō, a samurai who is remembered as a legendary ninja in today’s popular culture.

Human figures and faces are carved into the sandstone surrounding this cave in Czechia.

Two geologically young and nearly circular volcanic subsidence craters, each about a half-mile in diameter, abruptly break the nearly featureless Snake River Plain.

The urinal, known by many names and designated as a Norwegian Cultural Heritage Site for its simple and functional design, stands as a testament to old gay history in Norway.

Indiana's first constitution was drafted in the shade of this elm tree in the summer of 1816.

Feast your eyes on the centuries-old statues of the judges of hell.

Legend holds that St. Paul was flogged for preaching Christianity at this pillar.

This historic home has survived wars, drought, and financial woes to become a California landmark.

One Maltese man’s hobby became an extensive collection of restored automobiles, motoring paraphernalia, and antiques.

A bronze statue to commemorate an Auckland library's beloved feline resident.

Taiwan's first stone fortress is also the best preserved Qing Dynasty-era city on the island.

This curious gravestone tells the legend of an unknown mariner's grisly murder.

A mysterious castle "in the clouds" has had many lives including a radar bunker, dog hotel, and conference center.