This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

A park full of outsider art, created by college students studying outsider art.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

A wonderful and easily overlooked museum tucked in Ohio's Burke Lakefront Airport.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

This library and museum is dedicated to the life and literature of the Indianapolis native author.

There are more than 4 million bricks inside this unofficial Lego museum in a former middle school.

The largest earthwork effigy in the world.

The angel of death appears to weep black tears at this grave marker.

Thousands of jack o'lanterns light up Halloween at this historic West Virginia home.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

A humble homemade ride attracts visitors from around the globe to this small Midwestern town.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

One man's vision and a labor of love of many.

Ruined pieces of stone and a swimming pool are all that remain of an amusement park swept away by a flood.

The first spinning jail built in the United States is the only one that still turns.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

If astronomy had a ghost, it would look like this observatory.

The longest navigable underground river in the United States is home to countless blind and albino animals.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

This Old Testament garden features 100 plants from biblical times.