The last bastion of Roman presence north of the Alps looms over a German town.

Tiny castle in the middle of the Rhine made you pay to pass.

Legendary site where an evil bishop was devoured by rodents.

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.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

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

Icelandic folklore says this giant boulder was ripped from the mountains and placed at its current location, where it became home to elves.

This beautiful, historic church looks like something out of a simpler past.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

One of the oldest family businesses in Reykjavík serves lamb-based hot dogs.

An unusual building on a "desolate hill" features the works of an Icelandic sculptor.

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

A state-of-the-art medical facility dedicated to treating beloved birds of prey.

Qatar's oldest market can trace its origins back more than a century.

The building is a gigantic piece of art inspired by the shape of a desert rose.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

An ancient capital city that dates back 3,000 years and harbors many surprises.

Gladiators battle and chariots race daily in the ruins of a once-great Roman city.

A powerful tribute to the victims who suffered under Ethiopia's most devastating regime.

Rimmed by white crusts of salt on every edge, Lac Assal is one of the saltiest bodies of water in the world.

A Mayan village preserved for centuries in volcanic ash.

This whimsical winery by Antoni Gaudí looks ripped from the pages of a fairytale.