A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

Stroll through a wonderland of stupendous moss-covered trees.

Towering basalt columns, a creation of fire and ice.

The final resting place of New Orleans' most famous voodoo priestess.

Enormous lake at the bottom of a unique cave system.

Eighteen miniature death-scene dioramas.

This shop specializes in oddities and Victorian-inspired wonders.

The seamy, underground secrets of Portland's criminal past.

A hand-built folk art installation covered with messages of God's love.

A winding path built in secret on the edge of the continent.

One man's homage to the sun continues to grow like a glass fractal.

The only theatre in the world constructed specifically for sound movement.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

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

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

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Medical and zoological curiosities for sale.

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

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

America's most famous piece of self-built architecture.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

A layered tribute to the work of mosaicist Isaiah Zagar.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

A walk through the historic city center, under the streets of Seattle.