(1) Uppsala Cathedral: free entry, open daily from 8am to 6pm, but access may be restricted during services, concerts or ceremonies.
(2) University / Carolina Rediviva: the free Carolina exhibition is open daily from 12pm to 4pm.
(4) Uppsala Castle / Uppsala Slottshistoriska: the permanent exhibition Slottsliv is free, the museum is cash-free, and opening hours vary by season — in summer, it is usually 12 noon–5 pm daily.