This eighteenth-century building was restored to house the Hugh Mercer Apothecary. Dr. Mercer served the citizens of Fredericksburg with medicines and treatments of the time. Leeches, lancets, snakeroot, and crab claws made up just some of the remedies. Dr. Mercer practiced medicine for fifteen years in Fredericksburg. He left his practice to join the Revolutionary army and died as a Brigadier General at the Battle of Princeton.