Old Slave Mart Museum brings to life dark history of Charleston The building was used as an auction site to sell people of African descent. The Old Slave Mart Museum is a building where people of African descent were sold into slavery in the 1850's and 60's (Source: Raphael James Live 5 News) By Ann McGill and Raphael James | February 23, 2021 at 2:32 PM EST - Updated February 24 at 9:26 AM CHARLESTON, S.C. (WCSC) - Walk into the Old Slave Mart Museum in downtown and you will be standing in a place that holds a dark history of Charleston and America. “You’re going to step foot o...