A micronation on an islet along the coast of a Portuguese island.

Lava stone structures possibly dating back to the 19th century may have been a stopping point for voyagers between ancient Egypt and the Mayan Civilization.

This replica of Columbus's famous ship houses the history of La Palma's maritime importance during the Age of Exploration.

Marvel at this massive waterspout fueled by the incoming tide.

Croatia's "hairy stone" fortress is one of the most well preserved Istrian castles.

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.

Yugoslavia's biggest underground airport lies in ruins.

This one-of-a-kind archeological site is home to strange prehistoric ruins, the original use of which is still a mystery.

A miniature Corsican village built out of pebbles.

A formerly opulent Italian village is now a crumbling ghost town that no one really knows what to do with.

The walls and streets of the ancient city are peppered with penises.

According to the legend, this structure was built in a single night with the help of the devil.

Beautiful views and Roman-style statues on the Italian coast.

The people of Padua pledged to construct this church if the city was spared from destruction during World War I.

Massive galleon from a box-office bomb docked in Genoa.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

The tomb of the mythological founder of Padua is not hidden in some obscure crypt, but stands right in the middle of the city square.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

Originally a leper colony, the island is now an Armenian monastery that's home to an incredible manuscript library and eclectic museum.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

A vast Communist-era exhibition space in the Bulgarian capital.

Sofia's legislative center is continuously reinventing itself.

"Holy Wisdom" overlooks the city that became its namesake.

"Unity, Creativity, Beauty."