This church also serves as a lighthouse complete with a beacon.

A touching tribute to the "Wonkey Donkey."

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

Organisms normally seen under a microscope decorate this church.

There are hidden patterns on the subway seats of some Stockholm metro cars.

Dedicated to the untimely death of American balloonist and parachutist.

Located inside Hoge Veluwe National Park, this museum began as the private collection of a prominent female art collector.

Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

A medieval setting reimagined into a unique art alley.

A much-loved sculpture depicting the hero of a 1956 anti-Soviet uprising.

A public work of art that also provides some relief from the summer heat.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

Inside this Krakow church, an explosion of psychedelic color.

You've probably seen these distinctive orange-tiled columns on the big screen.

A spectacular Petrine Baroque summer palace commissioned for Catherine I by Peter the Great.

The Guardian of Tallinn.

The oldest continuously operating pharmacy in Europe.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

The metal leaves on this tree are engraved with the names of Holocaust victims.

On Gellért Hill, this statue depicts the tragic tale of lovers divided by the Danube.

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.