This unique building in the main square stands out among the city's typically Baroque architecture.

Traditional Danish spot where the schnapps are flowing and the smørrebrød is loaded.

Site of the first radio and telephone broadcasting companies in Copenhagen.

A unique sculpture designed to outline humanity's reliance on oil.

An abstract monument to a symphonic composer.

According to local legends, the shallow sandbar that allows visitors to walk across Orhaniye Bay has a tragic backstory.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

One of the largest wooden constructions in Europe was meant to be a casino, but soon became an orphanage.

A marvel of Byzantine engineering under the streets of Istanbul.

An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

Legend says if you stick your thumb in the hole and it gets wet, your wish will be granted.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

A famous big wave from Japan serves as a tribute to the victims of the disastrous Elbe flood.

The last king of Poland was interred in this church nearly 200 years after his death.

This bell stars in a tragic love tale and is said to make wishes come true.

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

Brought to you by the makers of fiberglass dinosaurs.

While the U.S. and Soviet Union were engaged in a space race, Poland built a UFO on the ground.

Warsaw's fantastically preserved gasworks...almost.

An artificial date palm stands as a memorial to Warsaw's Jewish community.