This public park was the site of the largest civilian disaster of the Civil War.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

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

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

Home of an evil witch famous within southern folklore.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The abandoned Japanese amusement park once loomed as a dystopian Disneyland.

The first declared National Monument in the United States.

Northern Ireland's Brobdingnagian stepping stones.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

A battle between nature and architecture in the Cambodian jungle.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

Monasteries on rock pillars, once accessible only by frayed ropes.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Try not to get slimed in Tribeca.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

Mysterious rocks that ring musically when struck.