1. Get Your Vitamin Sea At Castle Island
Take a ferry to this historic harbor island and enjoy stunning views of the Boston skyline. The location provides a peaceful and picturesque setting, making it an ideal spot for a leisurely stroll or a relaxing afternoon by the water.
The island features a walking path that allows visitors to enjoy the fresh sea breeze while taking in the scenic views. The grassy areas are perfect for picnics, and the beach provides a place to unwind.
This is one of the best things to do in Boston for free.