These engineering masterpieces are a dominant feature of the Belfast skyline.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

These barriers stand as stark reminders of Northern Ireland's troubled past.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

It was once nicknamed "the most bombed hotel in Europe."

This unique building in the main square stands out among the city's typically Baroque architecture.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

Seventy-five miles of limestone caves host more than a million bottles of wine beneath a sleepy Moldovan town.

This 13th century Orthodox monastery is built right into the Moldovan cliffside.

There is a mouldering Jewish cemetery hidden away in the capital of Moldova.

The largest wine cellar in the world is a 150-mile network of underground caves near the capital of Moldova.

This sign marks the entrance to a tiny proto-state within the small country of Moldova.

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

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

One of the last Jazz Age "Wonder Theaters" in New York City.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

The "Seinfeld" diner.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A group dedicated to promoting boating, kayaking and environmental education programs.

This neo-Gothic former auto showroom is one of the few remaining reminders of Brooklyn's "Automobile Row."

A ruthless Soviet relocation campaign birthed a new cuisine, and this humble restaurant.

One of the few Glatt kosher delis in the United States is a cornerstone of its Hasidic neighborhood.

A cargo of beautiful music.

“Wagon Jobber" turned smokehouse magnate's family-owned business is still going strong 100 years later.