Visit the Cape Cod Museum of Natural History.
Visit the Cape Cod Maritime Museum
Explore the Woods Hole Oceanographic Institution
Cape Cod Map
"Wishing to get a better view than I had yet had of the ocean, which, we are told, covers more than two thirds of the globe, but of which a man who lives a few miles inland may never see any trace...I have spent, in all, about three weeks on the Cape; walked from Eastham to Provincetown twice on the Atlantic side, and once on the Bay side also...but having come so fresh to the sea, I have got but little salted." —H. D. Thoreau, Cape Cod (Boston: Ticknor and Fields, 1866),1.
View larger versions of this and other maps made by Thoreau at the Concord Free Public Library.