A Buddhist retreat built on more than 100 acres of California Redwood forest.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

The United States' first transcontinental automobile road came to its end at this spot in San Francisco's Lincoln Park.

The "Seinfeld" diner.

One of downtown Berlin's last reminders of its Communist past.

This giant boulder is sandwiched between apartment complexes in upper Manhattan.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A unique bridge with an equally unique view.

The unusually large seat sits atop the base of a ruined temple.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

Go surfing on this urban wave, "hacked" by local surfers.

A fearsome dragon clings to a corner of Munich's city hall.

A historic fire call point.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

Once a path for Jewish funeral processions, this unassuming alleyway is rich in local lore.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

The original burial place of this preeminent 18th-century Jewish philosopher was razed by the Nazis.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Blitzkrieg bop your way through Berlin's Ramones Museum.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.