A Roman bridge closed to car traffic in the 1990s now open to foot traffic.

This whimsical statue marks the high water level from the Great Flood of 1993.

Around 50 million gallons of water flow from this spring every day.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

Giant granite rocks standing end-to-end like a train of circus elephants.

Erosion and time have created a naturally-formed water park.

A 40-foot waterfall flows into this unique natural swimming hole.

One of the deepest springs in Missouri.

It's as if the herds walked straight out of a fairy tale into the Missouri wilds.

A historic, scenic mill that was forced to close due to overlogging.

An underground river pushes more than 200 million gallons out of this Missouri spring every day.

The seventh largest spring in the world.

A memorial dedicated to a traveling circus elephant killed by a lightning strike in 1972.

The oldest house in Galena, Illinois, now is a reminder of when this city was the world's lead mining capital.

The oldest operating hotel in Illinois enjoys a historic (and some say haunted) past.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

This grave marks the final resting place of a legendary frontiersman... unless it doesn't.

The 34th governor of Kentucky was sworn into office while on his deathbed after being shot outside the State House.

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

A burial site located in the middle of a road.

The final resting place of the renowned, eccentric artist doesn’t even include his name.

This tower was once used to create ammunition for early settlers.

This sweet Southern elixir comes from what may be the oldest grape vine in North America.

The 15-foot-wide, 2-ton pan fries hundreds of chickens once a year.