A haven for book enthusiasts across the street from Retiro Park.

Commemorating the landing of William of Orange with his European army on their way to the Battle of the Boyne.

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

This fairytale-like structure is the last turf church ever constructed in Iceland.

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

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

This five-foot-tall bronze bird is a memorial to a species that was hunted out of existence.

Walk in the footsteps of the gods and straddle two tectonic plates.

This former power station is now a museum dedicated to the region's coal-producing history.

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

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

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

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Local lore says the devil built this beautiful medieval bridge to help a fleeing bandit.

A submerged village appears when dam levels drop.

This humble bench is considered the most beautiful in the world.

"Satisfying" is a good way to describe these beautifully aligned rows of Spanish mills.

This small, lush island has a long and bloody history.

These barriers stand as stark reminders of Northern Ireland's troubled past.

Originally commissioned as a sculpture to reflect the history of Belfast's red-light district, the final sculpture has been banned from Belfast public land.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

It was once nicknamed "the most bombed hotel in Europe."