Mt. Takao Trick Art Museum is open daily from 10:00 AM to 7:00 PM (last entry 6:30 PM) in April-November and 10:00 AM to 6:00 PM (last entry 5:30 PM) in December-March. Adult admission is 1,330 yen, middle/high school students 1,020 yen, and children (4-elementary) 720 yen. Group discounts are available for 15+ people.