The highest rapid transit station in the world.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This unassuming North Austin neighborhood was built to test the novel idea of home air conditioning.

Every Christmas, one Arizona city makes the most of its dry climate by creating an arid desert tannenbaum.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

Home to over 300 antique cars and motorcycles, including Thomas Edison's Model A.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Elevated freight railway turned wildly successful urban park.

This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Its collection includes a broad array of social, geographic, graphic design, and political history.

Assemble a masterpiece at the first and only North American school exclusively dedicated to mosaic art.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

A retired subway car stands alone in a field in the middle of Queens.