The capital of the U.S. is filled with museums -- many of them free to visit as they're part of the Smithsonian. It's no wonder these places are so popular.
WASHINGTON (7News) — D.C. was ranked the second-best city in the U.S. to visit by U.S. News & World Report. Among the highlights were the city’s 17 Smithsonian museums and many monuments and memorials ...