This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

How a century-old glass factory in Queens became a concert venue and arts center.

A crumbling hospital from the 1850s on Roosevelt Island.

The most confusing clock in New York.

The only subway station in the city that still makes use of gap fillers.

An unusual college football tradition involves burying pieces of sod from competitors' turf, replete with tiny coffins and headstones.

A memorial to the politician who became Great Britain's first fatality to be caused by a locomotive.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

A drab two-story office space in Delaware is a hidden tax haven for Hillary Clinton, Donald Trump, and over half the Fortune 500 companies.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

A bit of retro transportation flair preserved in the world's largest department store.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

A remnant of the original World Trade Center complex continues to serve as a commuter gateway.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Little Red Lighthouse under the George Washington Bridge.

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

A mysterious air force base built to resemble a Long Island fishing village.

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

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

One of only two commuter aerial tramways in the United States.

Red frames showcase remnants of one of New York's original subway stations.

Elevated freight railway turned wildly successful urban park.