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

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Started as a kitchen garden, now the second largest botanical garden in the world.

Tiny memorials honor individual victims of the Holocaust.

This crumbling little graveyard was saved from the undergrowth by concerned veterans.

A tree grown from astronaut seeds which were exposed to cosmic rays.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

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

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.

The creek where a shark wreaked terror upon New Jersey, and served as the inspiration for "Jaws."

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

A steam powered train that runs on city streets.

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

The competition: breathe deeply as long as you can.

Once the tallest building in the world and the site of “the highest dinner ever held in New York” this building now holds the most expensive penthouse in the city.

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 site of the deadly Triangle Shirtwaist Factory Fire.

The former sign of this immortal music venue is just that--undying.

These subterranean storage areas hold emergency water reserves.

Golden Gate Park's historic collection of plants.

A man-made island in scenic San Francisco Bay.