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

Iceland's tribute to its thankless civil servants.

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

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

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

Three columns of volcanic rock shoot out of the ocean.

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

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

A freedman baker’s lavish tomb has a relief showing various stages of Roman bread making.

An intricate ceramic tile facade adorns this five-star hotel.

Charles Dickens was not a fan of the ghastly wall dressings in this 6th century church.

The yawning maw of this pagan visage is said to bite off the hands of liars.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

This ancient Roman arch misled treasure hunters for centuries.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

This medieval church in Rome was almost destroyed following a terrorist attack in 1993.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

The Habsburgs' royal collections of art and wonders.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.