The Quinta da Regaleira is open between 10:00 - 20:00 (summer season) and 10:00 - 17:30 (winter season). The entrance fee is € 6/4/18 (adult/child/family) and this includes entrance to the house and the grounds. There are good guided tours that cost €10 and this price includes the entrance fee. A typical visit lasts 1.5 hours with the majority of the time spent in the gardens.