An exquisite Baroque church in Vienna's old town.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

A patriotic medieval knight in driven-nail armor raised money for widows and orphans of WWI.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

Legends surround an ancient tree trunk riddled with nails for good luck.

Baroque celebration of the end of the Great Plague of Vienna.

A silly medieval mural preserved on the side of a Viennese house.

Op-art architecture designed for happiness.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

The topiary maze at the Habsburg hunting lodge.

A 12th-century castle featuring a sensory path where partially-sighted visitors can experience regional history through touch and sound.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

Statues of a fire-breather, a clown, and a whole performing troupe celebrate Luxembourg's creative side.

This magenta statue commemorates the legendary marriage between a mermaid and the city's founder.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

Vietnam's largest Buddha statue depicts a female sage.

Real bones which are said to have belonged to a Polish dragon.

This magnificent Art Deco church is a reflection of Lithuania’s turbulent history.

Over time, this castle grew to encompass the entire island.