Once you're done with the historic site, there are additional landmarks you'll want to see; one of these is the Theodore Roosevelt Sanctuary. The sanctuary is an Audubon Center and is associated with the Important Bird Areas program, a conservation effort focusing on at-risk bird species. Some of the bird species you might see here are the great egret, the eastern kingbird and the red-tailed hawk, to name a few. The sanctuary has a native garden where you can enjoy the flowers and other plants in a cultivated setting and trails for you to enjoy hiking. Another interesting attraction worth visiting is Planting Fields Arboretum, also near Oyster Bay. The estate symbolizes the wealth that was once concentrated here. Planting Fields was built before 1913. Its mansion and other buildings are all intact today, and you can tour the mansion to see the art and architecture that was so popular when the estates were developed. Book an RV rental near Sagamore Hill NHS, and you can experience what it was like to live in the lap of luxury. If you're looking for an outdoor experience that is more primitive, consider heading for Shu Swamp Nature Preserve. The preserve is a part of the North Shore Wildlife Sanctuary, which incorporates Shu Swamp and other preserves under one umbrella organization. Shu Swamp is an idyllic setting with tulip, red maple, and tupelo trees situated in a wooded wetland, spring flowers, and Beaver Brook flowing through the preserve. Park your Oyster Bay camper rental, and you can use it as a mobile bird blind, enjoying both nature and a hot drink in comfortable surroundings.