Below are the museums open on 1 May 2023. There may be changes in opening hours, please always check the official websites before visiting.
Opera della Primaziale Pisana, Piazza del Duomo, https://www.opapisa.it/
Tower, Baptistery, Monumental Cemetery, Museo delle Sinopie and Museo dell'Opera del Duomo: 9am-8pm (last admission 7.30pm)
Cathedral: 10am-8pm
Museum of Ancient Ships, Lungarno Simonelli 16, https://www.navidipisa.it/
10.30 a.m. to 6.30 p.m.
Walls of Pisa, Piazza del Duomo, https://www.muradipisa.it/
10 a.m. to 8 p.m. (last admission 7.30 p.m.)
SMA (Sistema Museale d'Ateneo)
Botanical Garden and Museum, Via Luca Ghini 13 / Via Roma 56, https://www.ortomuseobot.sma.unipi.it/
From 8.30 a.m. to 8 p.m.
Museo della Grafica, Lungarno Galileo Galilei 9, https://museodellagrafica.sma.unipi.it/
From 10 a.m. to 8 p.m.
Natural History Museum of Calci, Via Roma 79 - 56011 Calci (Pisa), https://www.msn.unipi.it/it/
Museo Nazionale di San Matteo, Piazza San Matteo in Soarta 1, http://www.polomusealetoscana.beniculturali.it/index.php?it/204/pisa-museo-nazionale-di-san-matteo
From 9.00 a.m. to 1.30 p.m. (last admission 1.00 p.m.)
Museo Nazionale di Palazzo Reale, Lungarno Antonio Pacinotti 46, http://www.polomusealetoscana.beniculturali.it/index.php?it/202/pisa-museo-nazionale-di-palazzo-reale
From 9 a.m. to 1.30 p.m. (last admission 1 p.m.)
Palazzo Blu, Lungarno Gambacorti 9, https://palazzoblu.it/
From 10 a.m. to 7 p.m.