From 1 October to 31 March: 8 a.m. to 5 p.m.
From 1 April to 30 September: 8 a.m. to 6p.m.
Prices
Without lift (551 steps): 6 euros
With lift to 3rd floor (320 steps): 8 euros
Vatican Caves
The caves have chapels dedicated to some saints and royal and pontifical tombs.