In 2016, exactly 100 years after the movement to create it began, this powerful museum finally opened its doors to the public. Transporting visitors through US history from an African-American perspective, the breadth and depth of its galleries have been striking a chord with visitors ever since.

Housed in a striking bronze building, this Smithsonian museum in Washington DC is free to enter but timed-entry passes are required to get in. From iron shackles to costumes worn by Black icons, a whole day is needed to absorb the exhibits in full. Best free museum in the US? You're looking at it.

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