Giant topiary dog once played a role in a terrorist bomb plot.

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

This fairytale medieval church in Poland originally spent centuries in Norway.

Come to this Polish museum to take a good, clean look at filth.

The largest toy museum in Poland showcases Europe's history of childhood.

This centuries-old wooden wonder was built in less than a year and is one of Europe's largest timber-framed churches.

Once a giant gingerbread factory, this space now hosts exhibits and workshops on the historic treat.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

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

France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The cave holds a spectacular array of stalactites and stalagmites, including one shaped like a giant human heart.

This architecturally eclectic fortress witnessed centuries of bloody turmoil, including the massacre of its ruling clan.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

The largest and most famous wax anatomical collection anywhere in the world.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

Fortified medieval tower house with lovely roof garden.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."