One of the world's largest collections of medieval religious art.

Dig for your own trilobites in this goldmine of invertebrates.

A museum in rural Utah documents the history of the Japanese Americans who were forcibly relocated there.

Oddly shaped rock formation, misassociated with a nearby utopian community.

A house carved into a rock in the 1940s.

This small pedestal marks the spot of the first lot of land sold in Alexandria, Virginia in 1749.

A former major munitions plant that has been converted into a sprawling art space.

Long buried under the 20th-century landscape, this lift lock of the Alexandria Canal is the lone remnant of an ambitious early American transportation project.

The narrowest house in America is seven feet of pure spite.

An original apothecary from 1792.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

This small interfaith chapel lies not far from the rim of the Grand Canyon.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

This Native American settlement dates back to the Pueblo II period.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

The site of the first battle of World War II.

This 13th century Gothic brick castle is the largest in the world by surface area.

Modern technology and live displays tell the story of the Pacific during WWII for the Internet generation.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

This ancient amphitheater was restored in the early 1990s.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

Hidden in the forest atop a long, winding driveway is this stately home.

A collection of artifacts from Maryland's maritime past.

One artist’s scheme to expand museum viewing hours into the evening led to the illumination of an entire city.