The first time we visited Segovia we passed over the Cathedral. This trip we went in and weren’t disappointed. It cost about 3 euros per adult. Photos were not permitted in many areas of the cathedral but you could sneak a few. The outside is gorgeous enough but the inside has an incredible courtyard that makes you feel like you are in some old-time movie. And there are some incredible chapels. If you have the time, it is a nice side tour.