Recommendations for a solo day trip?

Hello from your neighbor up north! I've been living in the Boston area for about 4 years now and have never had the chance to explore Providence. I'm planning on taking the train down tomorrow and was wondering if anyone had any recommendations that would be good for me to do as I'll be by myself. I definitely would like some restaurant recommendations (I love oysters, if that helps), but also any events, museums, parks, etc. I'm open to anything!