A striking symbol of the Bulgarian capital.

This historic black and white monastery is one of Bulgaria's architectural jewels.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

An ancient knight and a symbol of the city's freedom.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Macabre astrological automaton clock dating to the late 1400s.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

Walk through living pictures and music in the Cathedral of Images.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

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

Historic medieval fortified city in southwest France.

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

Ancient paintings known as the "Sistine Chapel of Cave Art."

19th century pendulum and a clock restored by a rogue group of guerilla artists.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

The celebrated eyesore created by starry-eyed sweethearts.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

The oldest stone house in Paris was built by its most famous alchemist.