A castle built by an eccentric medieval enthusiast in rural Ohio.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This historic hotel invented the chocolate brownie.

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

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

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

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

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

The body of one of the world's most famous outlaws is covered in cement and iron to prevent it from being stolen.