Fun things to do in Houston. With kids. on Instagram: "We got a sneak peek and downtown Houston is ready for fall fun! Discovery Green has been transformed into the Houston Pumpkin Festival - a magical wonderland filled with photo-worthy spots and activities for all ages. Think a giant corn pit, LED kayaks on the lake, pumpkin houses, cotton candy carousel, a giant slide, jumping pumpkin, and so much more! Houston Pumpkin Festival 📅 September 20 – November 2 🕒 Mon–Thurs: 3–10 PM | Fri–Sun: 10