As of my knowledge cutoff of September 2023, the entrance fee for Göreme Open Air Museum in Cappadocia, Turkey was 150 Turkish Lira for adults. However, please note that prices may change over time, and it’s always a good idea to check the official website or inquire with the museum directly for the latest information on entrance fees and visiting hours.
Additionally, there may be discounts available for students, seniors, and groups, so it’s worth asking about these options if they apply to you. Some tour packages may also include the entrance fee to the museum, so you may want to check with your tour operator if this is the case.