The smaller and "more experienced" (read: older) sibling of Catoctin Creek Nature Center, Fountain Rock Park and Nature Center is built around the ruins of old lime kilns. The former quarry pond is now home to several species of turtles, including snapping turtles and red eared sliders. The kiln ruins are visible both from the parking lot and on the nature trail at the back of the park. There are several small houses on the property, one of them the park office and the others open for occasional special events.

The nature center itself is on the smaller side, but is packed with a wide array of local animals, including several types of snakes, spiders, fish, frogs & toads, and insects. There's even a beehive inside, and the Queen is marked with a dot of special dye. Younger visitors will have fun looking for her. One minor negative about Fountain Rock is that while the park is open daily, the nature center is only open on weekends, and for limited hours at that.

Like any good park, there's a playground here, as well as a small fishing pond and a relatively new (as of February 2017) interpretive trail. Keep an eye out for the "Bug Hotel" on the trail!