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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

This small chapel is built of human bones and decorated with a golden skeleton.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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

Lines from a walking song are etched into a rock in Natural Bridge State Park.

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

Medicinal spa created with the discharge from a geothermal energy plant.

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

Rising from the sea like a stone monster.

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.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

A semi-scholarly approach to sex.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

A sacred lake composed of over 300 separate pools of highly concentrated minerals.

Traditional 15th century Chinese garden in the middle of Vancouver.

A colorful architectural gem in Seattle's uniquely modern Central Library.

A wall of chewing gum moonlights as collective art.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.