Free Admission Tuesday from 6am to 10pm at James Turrell Twilight Epiphany Skyspace - see INFO below. The Skyspace structure is open and available to the public throughout the day. Light sequences occur daily at sunrise and sunset. To experience the Twilight Epiphany sunset light sequence, simply walk up. It is free and open to the public. Please arrive 10-15 minutes early to guarantee your seat. Visitors are subject to Skyspace guidelines at all times when in and around the structure. More Info below.