Obelisks and stone pineapples in the Irish countryside.

The ancient tomb acts as a calendar that keeps perfect time.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

A little sculpture with a large wardrobe.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

Model Trains and Much More in Hamburg.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Hamburgers are intensely proud of their tunnel beneath the river.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

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

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

Dine amidst exotic plants at this former royal greenhouse.

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

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The final resting place for the remains of 143 Habsburg royalty.

Climb inside an iron crystal magnified 165 billion times its normal size.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

Historic medieval fortified city in southwest France.

Copenhagen's celebrated theme park and gardens.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

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

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.