| Opening times
The abbey can be visited 365 days a year from 10 a.m. to 6 p.m. (5:30 p.m. from November to February), all day long (ticket office closed between 12:45 and 1:45 p.m., Monday to Friday).
Visit without guide throughout the day, with explanatory panels
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Guided tours (without extra charge) Saturdays, Sundays and public holidays:
Every Saturday at 2:30, 3:30 and 4:30 p.m.
Sundays and public holidays at 11:45 a.m., 2:30, 3:45 and 5:00 p.m. (November to February: 11:45 a.m., 2:30, 3:30 and 4:30 p.m.)
Admission prices:
full price: € 6
reduced price: € 4,50
• children (over the age of 7)
• students under the age of 26*
• job-seekers*
• families with over three children*
Family (2 parents accompanied by their children) flat-rate admission price: € 18
free admission
• children under the age of 7
• Amis de Royaumont members*
• residents of Asnières sur Oise and Viarmes*
* proof required
At the park entrance, a bookshop-gift shop offers a wide range of books about the Middle Ages (history and architecture), contemporary poetry and music, regional works, children's books, cards, CDs and gifts.
The bar – tearoom is open from 12 noon to 6 p.m. on weekends and holidays (5:30 from November to February).
(2008) 
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