Peace Park and the Atomic Bomb Dome.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

This Japanese national treasure was originally built in 593.

Colloquially known as “piss alley,” this narrow street filled with tiny bars and barbecue stands looks like it was pulled straight out of “Blade Runner.”

Not quite the menace it once was, this monster still has some chops.

A 20-meter (65-foot) robot towers over Tokyo Bay.

The 10,000 Torii shrine.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

A magical place that lets you play in and explore the world of Studio Ghibli.

The world's most charming instant portrait studio also happens to be its smallest.

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

The world's northernmost ice hotel.

Collection dedicated to funeral rites, equipment, and mourning rituals of the Viennese.

The Corinthian columns that towered over Abraham Lincoln’s inauguration stand proud.

The most confusing clock in New York.

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

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A crumbling hospital from the 1850s on Roosevelt Island.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

A bit of the Berlin Wall was gifted to the Icelandic capital to commemorate the 25th anniversary of German reunification.

This stunning concert hall has become a symbol of Iceland's national recovery.

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

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

Tucked away amidst some of the most famous addresses in the world is New York’s only fraction of a street.