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

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

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

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

An underground city of salt.

Along this wire fence, travelers have been leaving a particular memento since 2012.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

The oldest bookstore in Iceland.

A world-class theater sits hidden in this remote town in West Iceland.

At this museum in Iceland, visitors can sample fermented Greenland shark.

One woman's lifelong collection is on display in this unassuming house on an Icelandic fjord.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

Iceland's tribute to its thankless civil servants.

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

This beautiful, historic church looks like something out of a simpler past.

These enlarged egg sculptures represent the native birds of eastern Iceland.

Puffin enthusiasts flock to Europe's largest seabird cliff, which over one million birds call home.

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

This stunning concert hall has become a symbol of Iceland's national recovery.