Question: best secret things to do in washington dc?
Answer: Tudor Place. Source: Atlas Obscura. ... , The U.S National Arboretum. Source: 1001 Gardens. ... , President Lincoln's Cottage. ... , The Hillwood Estate, Museum, and Gardens. ... , The National Museum of Health and Medicine. ... , The DEA Museum. ... , Dumbarton Oaks. ... , The Titanic Memorial.