Seven Falls has several things to see/do.
1. View the three water falls
2. Walk the trails at the top level of the park
3. See the Indian dance in the evening
4. See the nightly lighting of the water fall.
5. Climb the three steep stairways.
6. Go thru a mini tunnel to read history of mining.
7. Take pictures.
First, before you go there, be sure to call Seven Falls to make sure that the stairs are open and if the lighting works. We went three there three times over two days and never saw all details. Rain closed the stairs on day 1, and on day 2, the nightly colored lights failed, so we did not see the pretty colors. Anyhow, the water falls are very nice to see and the challenging part is that if you want to see the higher-level waterfall, you have to climb these very steep stairs, which is very strenuous on your legs. Make sure that people in your group are healthy to climb stairs (about 180 steps per stairway)
You can spend about two-three hours there depending if you walk the trails. It is a fun place to go to and I would recomend it to anyone. They charge a bit extra to go at nite-time because of the colored lighting, but I prefer the daytime because you can't really see to much at nitetime.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.