what to do what to do.......?

i will be flying in from Orlando, FLorida visiting family in Valencia for a wedding. Before the wedding i am flying into Barcelona on april 27th-5th. travelling alone 36m. I would like some great ideas of things to do around barcelona. I would be willing to drive up to 4 hours each way. Any ideas? I love food and nature and any festival that would be fun. I always help out people in our subreddit r/orlando was hoping some back. thank you!