My husband and I took the underground tour about 9 years ago and we were very excited to take our daughter back for her to experience it, but then we found out that the underground tour is not available until 2023 due to maintenance, but they offered a ground tour instead for $5 per person. We were a little disappointed, but decided to do the ground tour since we were already there and my husband and I didn't see the grounds while we there last time. Our tour guide was Reed and he was AMAZING! Honestly, best tour guide that we ever had on any tour and he deserves a raise! He is amazing at his job and made the tour enjoyable, but we also learned so much! He was great with kids. We had 5 kids in our group and he was very patient and included the kids within the tour! I highly recommend going and doing the ground tour until the underground tour is available and ask to have to Reed as your guide!