25 free things to do on Cape Cod
Larry Madin/Woods Hole Oceanographic Institution
Every wonder what was lurking at the depths of the ocean? Visit the Woods Hole Oceanographic Institution at Woods Hole to find out, located in an area well known for its international marine research.The institution offers free walking tours behind the scenes of the center (pictured) in July and August, Monday through Friday at 10:30 a.m. and again at 1:30 p.m. by reservation. The institution also offers a number of free seminars and presentations like Peanut Butter Club, a weekly talk held every Friday at noon at the Redfield Auditorium.