Located on a forty-acre peninsula, at the west end of Newport's famous Ocean Drive, Castle Hill Inn offers guests the romance, privacy, and extraordinary beauty of a secluded oceanfront resort. Featuring a fabulously restored Victorian mansion, quaint Harbor Houses, and exceptionally well-appointed Beach House lodging rooms snuggled along the coastline, Castle Hill provides a captivating and soothing retreat for seaside vacations and getaways. The new 'Chalet' Function Center can host groups and events in a stunning setting.

Outbound.com tells how to explore the Castle Hill Lighthouse grounds.  

Located on Narragansett Bay at the end of the historic Ocean Drive, Castle Hill Lighthouse is an active navigation aid for vessels entering the East Passage between Conanicut Island and Aquidneck Island.

Park at the Castle Hill Cove Marina and walk across the street. Follow the sidewalk left and you will see a small sign that states "Castle Hill Lighthouse" on your right. Follow the short well-beaten path to the lighthouse. You will hear the waves crashing and smell the fresh ocean air.

The lighthouse itself is closed to the public but the grounds are not. There is a series of stairs leading down to the lighthouse. Here you can go out on the rock, use caution.