There are several just north of Houston. The Landing at Seven Coves, Willis, TX, Sweetwater at Lake Conroe, First Fairway at Walden, Conroe, Inverness at Del Lago, Conroe, Silverleaf's Piney Shores, Villas on the Lake, as well as several in the Galveston area. All are within driving distance to Houston. If you want to visit NASA, the Galveston ones might make more sense.