10 am to 4 pm: What were Quaker meetings for worship and business like in the 18th century? Visit the Aisquith Street meetinghouse, oldest (1781) house of worship in Baltimore, for guided tours and historic materials. You can also visit the adjacent 1835 McKim Free School building. For details, go to https://www.doorsopenbaltimore.org/sites/1781-quaker-meeting-house/.