This elaborate towering structure was once famed for its revolutionary height.

A bronze monument to Cleveland's favorite, fastest son.

This steamer is known as "The ship that built Cleveland."

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

A serene temple with stunning stained glass hides in downtown Dallas.

This downtown Dallas art installation is always on the lookout.

See the sky in a new way through this art installation.

A wonder of natural limestone formations etched by millions of years of natural interaction between rainfall and rock and air.

Honoring combatants from Portsmouth who served in Cuba and the Philippines during the Spanish-American War.

A lightship turned museum, outfitted with artifacts from the vessel's past as part of the U.S. Lighthouse Service.

Get up close and personal at this Fresnel Lens.

Wander among the ghostly ruins of an island where civilization flourished for thousands of years.

Lived-in building, bedecked with an astonishing array of mirror mosaics.

A normal, unassuming pedestrian overpass has been the demise of many, many trucks.

Composed of scrap metal, a pair of platform-length murals chronicle Japan’s history, from the Big Bang to the development of modern Tokyo.

Kuwait City's uniquely designed water towers look straight out of a retro sci-fi cityscape.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

These whimsical works of art tell the story of the city's past and present.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Along this wire fence, travelers have been leaving a particular memento since 2012.

Three columns of volcanic rock shoot out of the ocean.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

This tiny museum's sizable collection is jammed into a former underground public toilet.