I lived in Boston for many years and there is no end of things to do. However, one of the prettiest drives in the world (in my humble, unbiased opinionated opinion) is along Rte. 1 in Maine. It follows the coastline, and at least used to have ample places to pull over to get photos or just bask in the beauty. I was in Boston in May and it was resplendent in a glory of spring flowers.