This tiny, hurricane-resistant house in Galveston is one of the city's most notable architectural oddities.

This hidden sculpture garden full of Wild West art is one of San Antonio's best-kept secrets.

The quirky gift from West Berlin for the 1968 World's Fair still stands in Hemisfair Park.

A 2,500-pound wooden nickel makes this woodworking museum easy to spot from the road.

An abandoned, decaying sculpture garden built by an eccentric physician in the 1920s now looks more like a forgotten cemetery.

These boots are made for selfies.

Soldiers honored the beloved Pat with a special grave.

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

A master plumber has turned his love of art and toilets into a folk museum that's not taking the piss.

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

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

The large rock formation where the Shawnee prophet Tenskwatawa stood and encouraged his warriors during the Battle of Tippecanoe.

You thought Santa Claus didn't exist, but it turns out you were wrong.

Lions and tigers and leopards, servals, pumas, bobcats, lynxes, and ocelots... oh my!

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

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

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

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.

This otherworldly church spire reaches up toward the heavens.

A kitschy, creepy St. Louis mainstay.

The fastest mail service in the west is tracked and memorialized along this 1,400 mile trail.

Where the author wrote her beloved "Little House" books.

A museum dedicated to man's boldest venture.