It is no surprise that the Lehigh Valley has a rich history, and as a result, houses some excellent museums. In Easton, there is the Canal museum which one can even take an old boat drawn by mules down a canal which is parallel to the river. This allows children to see historical artifacts from the early American industrialization era and see how goods used to be transported southward to Philadelphia.
Currently, there are plans for a Smithsonian-affiliated history museum to be built along the site of the former Bethlehem Steel plant in the city of Bethlehem. The old stacks and other materials have been preserved from the site to maintain the history of the region. While the museum is not yet open, there is a newly-opened casino on the edge of the place, which is a great stop for adult visitors to the Lehigh Valley.
Allentown also houses an excellent art museum. Although not as large as the Met in New York or the art museums of Philadelphia, the Allentown Art Museum still has a vast collection of both local as well as well-known artworks.