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

Once a popular watering hole among longshoremen and shipyard workers, this neighborhood treasure spans more than 100 years of Red Hook history.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Salute the leader of the proletariat.

Avoid gangster interaction while window-shopping.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

The "Seinfeld" diner.

One of only two commuter aerial tramways in the United States.

A dilapidated dock tells the story of Titanic's missed arrival.

Elevated freight railway turned wildly successful urban park.

Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

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

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Medicinal spa created with the discharge from a geothermal energy plant.

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

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

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

A restaurant and observation deck built in a unique broadcasting antenna.

Berlin's old airport.

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

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