Mappa Mundi and Chained Library exhibition The Mappa Mundi and Chained Library Exhibition is closed for essential cleaning and conservation work from 1 January 2022, reopening on 24 January. The Mappa Mundi & Chained Library Exhibition is open Monday - Saturday, 10 am - 5pm (last admission 4.30 pm) From Friday 10 December, face coverings must be worn throughout Hereford Cathedral by visitors, people attending events and those participating in an act of worship. Explore Hereford's famous medieval map and discover how scholars interpreted the world over 700 years ago, displayed alongside 229 illuminated manuscripts and over 1,200 early printed books. The exhibition is closed on Sundays, Good Friday, Christmas Day, Boxing Day and New Year’s Day. PRICES Adult £6 Concession (students only) £5 Large family2 adults and up to 3 children £14 Medium family1 adult and 2 or 3 children £10 Small family1 adult and 1 child £8 Advanced booking is not required unless you are coming in a large group