An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

The trials and tribulations of marking Poe's grave.

This playground sculpture of an icon from the past is dedicated to the children of the future.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

An ancient Egyptian temple in the middle of Madrid, Spain.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

Largest collection of mounted dinosaur specimens in the world.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

Largest man-made excavation on earth!

Despite sitting firmly in the global cradle of the Church of Jesus Christ of Latter-day Saints, this Hare Krishna temple is host to one of the largest color festivals outside India.

A small flooded ghost town with a few scattered structures remaining.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

Famously misunderstood wonder of the ancient world

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

A giant Troll lurks under one of Seattle's oldest bridges.

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

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.