The S.U.M. Hydroelectric Plant is a fascinating point of interest for visitors to New Jersey's national parks. Here are some reasons why:

1. Historical significance: The S.U.M. Hydroelectric Plant is one of the oldest hydroelectric plants in the United States. It was built in 1903 and was the first plant of its kind to generate electricity for public use.

2. Natural beauty: The plant is located on the Musconetcong River, which is a beautiful and scenic spot in the heart of New Jersey's countryside. Visitors can enjoy the natural surroundings and take in the views of the river.

3. Engineering marvel: The plant's turbines, generators, and other equipment are impressive feats of engineering. Visitors can learn about the process of generating electricity from water and see how the plant works.

4. Educational opportunities: The S.U.M. Hydroelectric Plant offers educational tours and programs for visitors of all ages. These programs provide a hands-on learning experience and teach visitors about the importance of renewable energy sources.

5. Unique experience: The S.U.M. Hydroelectric Plant is a one-of-a-kind attraction that offers a unique experience for visitors. It is a great place to explore the intersection of history, nature, and technology.

Overall, the S.U.M. Hydroelectric Plant is a must-visit destination for anyone interested in history, engineering, and the natural beauty of New Jersey. With its rich history, stunning scenery, and educational programs, it is sure to provide a memorable experience for visitors of all ages.