Explore 10 acres of environmental sculptures.

DIY collection of eclectic holdings.

The summer home of the largest colony of bats in the world.

Abandoned railroad tunnel is home to a colony of three million Mexican free-tail bats.

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

Continuing the tradition of the dime museum in style.

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

It's not your typical library, memorial, or book store.

A house built from trash known as the poor man's Hearst Castle.

The abandoned personal amusement park of the King of Pop.

California's oldest wind harp represents a historic piece of America's Danish history.

A hotel and restaurant serving as the mecca of kitsch.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A self-built castle made by a mysterious man.

Outsider Art Community.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Quite simply the largest tree in the world (by volume).

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

Eons old volcanic activity created one of the most stunning rock formations in the United States.

Towering basalt columns, a creation of fire and ice.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.