Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

This charmingly homemade amusement park has been growing for 40 years.

Rare recess caves fill this unbelievably beautiful Ohio park.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

This naturally-sourced hot spring is now home to a clothing-optional resort.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

This museum of miniature displays provides a journey through early American history.

This huge clock made of flowers and simple machinery was once used a political weapon.

A whimsical folk art garden full of punny pieces and a diorama containing 3,500 toys.

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

This boulder stays on its mountain thanks to a huge chain and on the map due to local legend.

A museum that houses the world's largest collection of ventriloquism dummies.

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

Prehistoric animals decorate this popular outdoor park.

The largest drain hole in the world.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.

An obscure waterfall that looks like something out of a fantasy novel.

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

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

This former coal gasification plant found a curious second life as a popular public park.

A stealthy Apache hideaway that became the haunting site of a mass grave.