Near downtown Oakland, Lake Merritt was the first National Wildlife Refuge in the U.S. It's was originally a tidal estuary; today it's a man-made, saltwater tidal lake and the largest such feature in the U.S. A path for jogging and biking runs around the lake and is 3.5 miles. There are parking meters, but no other fee to use the path. For a fee, the city provides boating lessons and rentals. You can also bring your own non-motorized craft. And, you can also watch migratory birds.
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