The Exploratorium is located inside the Palace of Fine Arts in San Francisco's Marina District. Museum admission is as follows: Members FREE; Adults (18-64) $15.00; University Students (with ID) $12.00; Senior Citizens (65+) $12.00; People with disabilities $12.00; Youth (13-17) $12.00; Children (4-12) $10.00; Children Under 4 FREE. First Wednesdays of the month FREE. Exploratorium hours are TUESDAY THROUGH SUNDAY 10am-5pm, Open First Thursday of the month for adult evening hours until 10pm. CLOSED MONDAYS, except for Martin Luther King Jr. Day, Presidents' Day, Memorial Day and Labor Day. The Exploratorium is wheelchair accessible. For information, call (415) EXP-LORE.