Self-sufficient greenhouse floating on the Hudson River.

A large boulder marks the place where the island of Manhattan was purportedly "sold" to the Dutch.

This Manhattan museum houses one of the largest collections of Spanish art and manuscripts outside of Spain.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

Japan and South Korea both lay claim to islands inhabited by one woman.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

A Saint Nicholas-themed ghost town in the Mojave desert.

In Mexico, an abandoned Scottish-looking castle stands as a tribute to love.

In Chapultepec Park there is a pavilion gifted to Mexico from South Korea to honor the 1968 Summer Olympics.

This clock was gifted to Mexico as a show of gratitude for its long history of welcoming Arab migrants.

This conservation area is also home to many of the region's desert tortoises.

A bronze ballot box stands at the spot where Susan B. Anthony voted illegally.

Much of what constituted mid-century Liverpool now litters a beach outside of town.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

There’s a special club house at the top for the bell ringers.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

What was meant as an innocent piece of art has earned a reputation as the "mansplaining sculpture."

Walk in the footsteps of the gods and straddle two tectonic plates.

Staves, storm-calling, and of course, necropants.

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

Now abandoned, this East Austin school for the disabled began as the "State Colony for the Feeble-minded."

Marking the spot where a conquistador gave up his search for the fabled Seven Cities of Gold.