This sturdy, circular stronghold served as one of the forts that protected the Venetian Lagoon.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

The 20th-century chapel’s intricate woodwork includes amazing details, most notably angels playing bagpipes.

360° views of the city plus five floors of optical illusions and hands-on science.

This black church sits alone among a field of lava rock.

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

A Wes Anderson-esque lighthouse that boasts magnificent coastal views.

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

Dozens of large, brightly-colored paintings adorn the walls of the "street art capital of Iceland."

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

This elegant arc of a waterfall marks a religious turning point.

A sulfuric martian landscape that looks far better than it smells.

The most powerful waterfall in all of Europe.

This canyon is comprised of gorgeous waters and magnificent basalt columns.

The bright red stripes streaking across the rocks are the star feature at this Icelandic waterfall.

This replica Viking village was created for a film that was never shot and is now open to visitors.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

A black sand beach where glacial fragments wash ashore and look like sparkling diamonds.