This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

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

Elevated freight railway turned wildly successful urban park.

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

A peculiarly shaped brass sculpture hidden in a courtyard in central Lviv

Monumental sculptures guard many of the graves, transforming this necropolis into an open-air fine art museum.

This Ukraine alleyway has become its own little island of forgotten things.

World's largest crossword puzzle spans the side of a towerblock, its clues scattered throughout the city.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

Metro station with a claim to rock n' roll fame.

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.

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

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

A fascinating insight into daily life in the Eastern Bloc.

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

One of the famous Czech artist's lesser-known Prague installations appears to be a glowing fetus affixed to a drainpipe.

A surreal statue honoring Prague's favorite literary son.

A series of playful yellow penguins share a serious message about the environment.

A sculpture of the iconic East German car on four legs is a tribute to those who traveled to Prague seeking asylum.

Looming communist pillar with a Czech twist.