A statue honors the children who fought Nazis in Poland.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

A 20th-century picture show in 3-D.

A stone marker and sculpture in the city of Riga stake a claim for the very first community Christmas tree.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

This dizzying tower was built to better broadcast the 1980 Moscow Olympics.

The Guardian of Tallinn.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

This soviet pilot's graveyard is filled with headstones made of airplane fins.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

The gutted remains of this Estonian mansion are a monument to a tragic love.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

Where the lovelorn find a home for their sentimental keepsakes.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A patch of Philippines forest devoted to saving the lives of an emotionally sensitive species of googly-eyed primates.

Bohol's mysterious brown hills.

A forest of phallic offerings found in a quiet corner of a hotel car park.

A condom-covered Thai restaurant that is more concerned with birth control than food.

Bangkok celebrated its shifting monarchy with a militaristic homage to democracy.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.