This striking public art installation is suspended above a public park, designed to gently move in the breeze.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A magnificent, glittering building tucked into a tiny Bulgarian mountain town.

Sofia's legislative center is continuously reinventing itself.

A striking symbol of the Bulgarian capital.

This elaborate towering structure was once famed for its revolutionary height.

A lush green oasis in the middle of Chicago.

One man's swirling six-acre monument of stone.

This stone is a marker of one millionaire's personal vendetta against gravity.

A whale's jawbone and a malfunctioning harpoon welcome you to the village of Bragar and its lore.

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

A library and museum dedicated to typography.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

An elevator into the Baltic Sea.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

These eerie outliers of the lightning bug family glow a mysterious blue color.

It took more than 20 years and a sharp eye for one man to assemble this quirky collection.

The oldest bridge in South Carolina may have been designed by the same man who created the Washington Monument.

This ceremonial mound is one of the first officially recognized Native American historical sites in North Carolina.

A psychological self-portrait in the form of a giant, segmented head.