We biked here from Ship Bottom to see the lighthouse. There was a short loop trail near the visitors center which had signs explaining some of the plants in the area. Near the lighthouse is a walkway that goes out towards the water where you can look back towards the lighthouse.
You can walk up the 217 steps to reach the top of the lighthouse for some great scenic 360 degree views. It sounded like a lot of steps but the walk up was not too bad. There is a fee for going inside the lighthouse of $3.00.