Entry to Arlington House, the Robert E. Lee Museum, and the slave quarters is free.
Reservations are not required to tour the house. There may be a delay to enter the house on busier days. Groups are limited to 25 at one time due to second floor weight limitations and to avoid overcrowding.
Maine ocean islands provide the only nesting sites for Atlantic puffins in the United States. Eastern Egg Rock in the midcoast region, Seal Island and Matinicus Rock at the mouth of Penobscot Bay, and Machias Seal Island and Petit Manan Island off the downeast coast provide habitat for more than 4,000 puffins each summer.