This hidden green space is the city's second largest conservatory.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The most visited, and possibly most controversial, museum in Germany.

Cold war icon and onetime "hole" in the iron curtain.

Copenhagen's celebrated theme park and gardens.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Once a ferry dock, radio transmitter, and now a new Greenpoint park.

Once a flowing stream and where the USS Monitor, the world's first ironclad, was built and launched.

Neoclassical bank designed by NY architects Helmle & Huberty.

Constructed in the 1920s, this former pencil factory is now an office building.

3,200-square-foot mural inside Dartmouth Library depicts the history of America with images of human sacrifice, ancient gods, and other unspeakable terrors.

The strange, ritualistic-seeming 100+ year old basement of a New Hampshire undergrad society.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

Church featuring "high Victorian gothic" architecture.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

The return of something once considered a basic part of life.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.