The Charleston Museum and its historic houses are open regular hours on Labor Day. Come enjoy your holiday weekend with us! The Charleston Museum: Monday through Saturday 9 am to 5 pm, Sunday 12 to 5 pm Heyward-Washington House: Monday through Saturday 10 am to 5 pm, Sunday 12 to 5 pm (last audio tour begins at 4:15 pm) Joseph Manigault House: Monday through Saturday 10 am to 5 pm, Sunday 12 to 5 pm (last guided tour begins at 4:30 pm)