An homage to everyone's favorite prehistoric cartoon family.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

A tunnel with windows, so you don't miss out on the impressive views.

The unusual patterns in this rock formation result from two distinct modes of weathering.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Berkeley Springs State Park boasts the nation's only monument commemorating presidential bathing.

Three columns of volcanic rock shoot out of the ocean.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

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

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

This modern monument to pagan belief looks like it was transported straight from ancient times.

The most powerful waterfall in all of Europe.

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

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

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

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

A Wes Anderson-esque lighthouse that boasts magnificent coastal views.

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

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

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.