National Electronics Museum

The National Electronics Museum in Linthicum, a suburb of Baltimore in Maryland, displays the history of radio-frequency and communications technology through original equipment, from the telegraph to satellite radar. Founded in 1980 under the wing of Westinghouse Defense, it remains a private foundation closely linked to local defence contractors. Highlights include a 1942 early-warning radar from Pearl Harbor, an original SCR-584 gun-laying radar that intercepted German V-1 cruise missiles in the Second World War, plus amplifiers and tubes from the Apollo Moon-mission radios. Hands-on stations let visitors press buttons, build radio links or sight a sextant, which makes the museum a draw for technically minded children. Admission is free; opening hours are Wednesday through Saturday. The site sits a short shuttle ride from Baltimore-Washington International Airport, a handy stopover for travelling tech enthusiasts.