14National Museum of American History, Washington DC, USA
The free entry National Museum of American History brought in a whopping 4 million people in 2014. A primarily Smithsonian institute, it exhibits several facets of the illustrious American history such as cultural, military, socio-political, scientific and much more. Among several exhibitions here, you’ll find American Civil War memorabilia, fashion trends over the course of history and other fascinating relics from American culture.