Two volcanic lakes in an enormous crater formed in a prehistoric eruption.

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

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

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

Three columns of volcanic rock shoot out of the ocean.

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

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The most powerful waterfall in all of Europe.

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

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

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

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.

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

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

The pleasant woodland cemetery that has inspired more than its fair share of wild legends.

This little-known rival to the Library of Congress houses one of the largest collections of pre-1876 American books, newspapers, and manuscripts.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

One of the best examples of Art Deco architecture in the United States.

A museum packed with instruments, lyrics, and other mementos of the American folk icon.

A half-size replica of the World Trade Center towers above Tulsa.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

Each time a baby is born in Ghent, these streetlights flash in silent celebration.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.