This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This snug medieval lane is one of the narrowest streets in the world.

Romania's triumphal arch looks out over Bucharest.

In the summer of 1957, a massive architectural exhibition showed off the future of urban living in this German neighborhood.

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

This red light district plaza memorializes the Fab Four and their historic connection to the area.

This lonesome Monterey cypress has survived centuries of wind, salt, and at least one attempt at arson.

Something's watching you.

This ancient Corinthian helmet is South Korea’s only national treasure of Western origin.

Down this Cracovian street resides a plaque with a stark message about the city's air pollution.

A statue commemorating a Polish dog who took his role as man's best friend very seriously.

A collection of old neon signs from all over Poland line a secluded courtyard.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

A striking public sculpture representing the period of martial law in Communist Poland.

The silly symbol for an underground protest group is now scattered around the city.

Memorial to the lost dead of Gdansk, whose resting places were destroyed during World War II.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

Museum dedicated to "the man who moved the Earth."

Once a giant gingerbread factory, this space now hosts exhibits and workshops on the historic treat.

This Communist-era residential block is one of the longest residential building in Europe.

Two gushing waterfalls of hot spring water within a block of each other.

An impressive monument to Poland's independence.