A taxidermied stork with an arrow through its neck proved that birds migrate.

Enter the world under the hill at this ancient UK burial chamber.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

Possibly the oldest of Britain's ancient henges is also one of its most stark.

The discovery of this Neolithic settlement, which contained a Stone Age "cathedral," threw archaeologists for a loop.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

This Croatian island is for sale but no one is buying due to the dozens of accused Nazi sympathizers who were massacred there after WWII.

Single runway interrupted by a busy road that cuts across its middle.

This stucco building in North Africa was the first American-owned property on foreign soil.

Inside this mansion turned museum, the works of prominent Croatian artists are on full display.

Gargoyle head that brings good luck.

This 15th-century church houses priceless works of art from a range of Croatian artists.

An ancient knight and a symbol of the city's freedom.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

This World War I fortress is the perfect place to catch a Montenegrin sunset.

A beautiful mountaintop mausoleum devoted to a Montenegrin icon can't seem to make everyone happy.

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

Terrifying derelict military hospital once housed a recuperating Hitler.

Designed to resemble foreign architecture, this mosque-looking structure was used to pump water to a royal fountain.

The "Prussian Versailles" that is as glorious today as when it was built.