The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

This candy shop has been serving up sweets to the Louisville area since the 1850s.

Where beautiful signs live on forever.

A priceless collection of the Nation's cryptologic history.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

The trials and tribulations of marking Poe’s grave.

This historic hotel invented the chocolate brownie.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Location of a reliquary containing bone fragments of 18 saints.

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

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

The world's longest known cave system.

"Where the ducks walk on fish."

This replica of the Greek structure is in the heart of Nashville.

This 19th century mansion façade adorned with immigrant patriotism is a symbol of Louisville’s history.