Arlington Cemetery or Smithsonian. Exhibits of many species of freshwater and saltwater fish, including shark and piranha feedings. The subject of the Museum is dedicated to American achievement in architecture, urban planning, construction, engineering, and design. Includes interactive, hands on exhibitions. Explorers Hall has exhibits depicting major discoveries, exploration, and research.
Self guided tour includes a short film, hand-on exhibits, and a gift shop.
Closed on Christmas Day. Admission is free. The Memorial is in remembrance and honors all of America's federal, state, and local law enforcers. There are more than 13,500 officers inscribed on the blue-gray marble walls, dating back to the first known death in 1794. Its architecture is Byzantine and Romansque in style.