Visited on 10 oct 2019 . No entrance fee , if you want you can donate or not . There is also a minor museum inside which i did not visit .
There is great artwork in this Basilica and also a relic , the blood of Jesus Christ , you can pray at it and donate if you want . Certainly there are certain rules like no photographing the relic .
So ; free entrace , 30 minutes visit at most , obviously there are lots of tourists .A must visit .