Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Cold war icon and onetime "hole" in the iron curtain.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

The tower was originally used as a chimney for the waste incinerator of St. John's Precinct and Market.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

One of the oldest amusement rides in existence was a huge disappointment to its creator.

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

This sculpture is an instrument played by the swell of the seas.

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

This aging storage facility is the world's largest brick warehouse.

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

This tumultuous Icelandic lava field looks so alien European researchers want to use it as a stand-in for Mars.

This natural rock formation features seemingly unnatural vertical ridges that have been blamed on elves.

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

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

Three columns of volcanic rock shoot out of the ocean.

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

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

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

World's largest working waterwheel has been around for over 150 years.

A hundred copies of Antony Gormley's naked body stare out across the water.