These are the opening times in 2025 for Siena Cathedral, the marble floor and the Gates of Heaven:
Cathedral
- 8 January to 31 March: 10:30 - 17:30 (Sundays and public holidays: 13:30 - 17:30)
- 1 April to 2 November: 10:00 - 19:00 (Sundays and public holidays: 13:30 - 18:00)
- 3 November to 24 December: 10:30 - 17:30 (Sundays and public holidays: 13:30 - 17:30)
- 26 December to 6 January: 10:00 - 19:00 (Sundays and public holidays: 13:30 - 17:30)
Marble floor
- Uncovered from 27 June to 31 July: 10:00 - 19:00 (Sundays and public holidays: 09:30 - 18:00)
- Uncovered from 18 August to 15 October: 10:00 - 19:00 (Sundays and public holidays: 09:30 - 18:00)
Heaven's Gate
- 1 March to 6 January: Same opening hours as the cathedral
The last admission is 30 minutes before closing time.