In a city of stellar museums, this one often gets overlooked. But for those interested in the effects of injuries and disease on the human body, this is one you won't want to miss. The National Museum of Health and Medicine was established in 1862 to research and document the effects of war wounds and disease on the human body. Exhibits include more than 5,000 skeletons, 10,000 preserved organs, and 12,000 historical objects, such as the bullet that killed Abraham Lincoln and bone fragments and hair from his skull. Visitors can compare a smoker's lung to a coal miner's lung, touch the inside of a stomach, and view kidney stones and a brain still attached to the spinal cord.