![](https://www.canaltrust.org/wp-content/uploads/2017/04/Paw-Paw-Tunnel-Anni-Hultsch.jpg)
When you visit the Park, be sure to head out to the western end for a visit to the Paw Paw tunnel. Built as a bypass to very challenging terrain at Paw Paw Bends on the Potomac River, the 3,118 foot long tunnel, built by hand in the mid-1800s and containing close to 6 million bricks, is an engineering marvel.