The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

This 16th-century church now has a heavenly second life as a cultural hub of Pátzcuaro.

A long abandoned hospital building on the outskirts of NYC.

Underground vaults of a former brewery beneath Brooklyn's Crown Heights are now used to ripen cheese.

The best B-movies filmed on a shoestring budget were born here.

Offbeat arts organization that hosts exhibitions, events, and explorations.

A New York warehouse filled with an enormous amount of goods saved from the landfills and donated for creative use.

An epic sculpture depicting a wagon and straining oxen.

This Upper East Side apartment co-op was designed as a tuberculosis sanitarium.

This whimsical public art installation is a unique homage to Liverpool's industrial heritage.

The star-studded street honors the city's most notable Brummies.

A bench and a bridge pay tribute to Birmingham's favorite heavy metal band.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

First founded in 1472, this is the oldest bank in the world. Its history may explain why we call financial institutions "banks."

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

A group of abandoned factories and buildings that have been revitalized and are now used to promote culture, education, entrepreneurialism, and sustainable development.

Public opinion is still divided on this enormous sculpture in front of Baltimore's Penn Station.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

Recovered from the brink of extinction, at home in the Financial District.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.