Texas Children's Houston Open - Friday is the opening day of the Houston Open golf tournament, played at Memorial Park Golf Course in Houston. Watch some of the best golfers in the world tee off on a classic Houston course surrounded by tall pines and green fairways. Kids 15 and younger get free grounds access when they're with a ticketed adult, which makes it a great family outing. Children 4 and older need their own ticket to get into a venue.