If you're into old manuscripts and documents, this free museum is for you. Housed in an 1856 Methodist church, the museum wedges display cases around the pews. The revolving series of documents therein represent the eccentric private holdings of David and Marsha Karpeles. David began collecting historical documents in 1978, and now the series of libraries that he and his wife established are located in eight other U.S. cities in addition to Charleston. In the quarterly changing exhibits here, you might see papers ranging from letters from Roget's original thesaurus to letters penned by Sir Arthur Conan Doyle (creator of the fictional detective Sherlock Holmes).