From the 13th to the 28th. Opening hours: Friday 4:00 p.m. to 6:20 p.m. Saturday 10:00 a.m. to 1:20 p.m. / 4:00 p.m. to 6:20 p.m. Sunday 10:00 a.m. to 1:20 p.m. Between 11:00 a.m. and 12:00 p.m. on open days, the office may be closed due to a guided visit. Prices: €1.50/person. Under 12 years free. Payment: cash or card. No reservation required and no minimum number of visitors.