We really enjoyed hiking the scenic paths. We were skeptical, believing that everything in Houston is just flat, but there was more terrain than we expected. Although in the busy Galleria area, the woods and dirt paths really took you out of the City.
We got there at 8am to beat the heat and within an hour there was a lot of traffic and we did have to frequently step aside for bikers. I personally was not particularly bothered with this, but others looking for solitude should be warned.
All in all, we really enjoyed ourselves and will go back!