The Greek Orthodox Cathedral of Saint George occupies a series of interconnected buildings referred to as the Cathedral, Sunday School Building, and Community Center. The buildings are all connected and create an L-shaped plan. There is a full basement under the Cathedral and a partial basement under the Sunday School Building. The buildings were constructed in three distinct phases. The Cathedral was designed by John Haviland in 1822, the Sunday School Building was added shortly after, between 1838 and 1840, and the Community Center was constructed in 1950. The Cathedral was originally constructed as St. Andrew’s Episcopal Church, John Haviland’s own congregation. The Cathedral is designed in the Greek revival style and is believed to be modeled on the Temple of Bacchus at Teos. It has a broad rectangular floor plan running east to west, 66’-7” x 87’-10”. The front portico faces east with six ionic columns supporting it. A large, paneled door 25’ high with seven vertical by four horizontal panels is located at the center of this façade. There is a raised platform below the portico comprised of bluestone with marble steps leading from street level to the platform. These steps span the entire front façade of the Cathedral. The walls of the building are constructed of load bearing brick that has been covered with scored stucco scored to imitate ashlar. The stucco has been covered in a white textured paint. The foundation below the water table is made up of schist fieldstone. The East Façade is finished with a cast and wrought iron fence in neoclassical style. Windows for the basement, first floor and second floor align vertically on both the north and south elevations of the building, five windows for each floor on each façade of the building. The Narthex has a half-curved wood staircase at both the North and South Elevations. The interior of the Sanctuary is arranged in a conventional three-aisle plan with balconies to the north, east and west. The roof trusses are exposed but have replaced an originally flat ceiling, which had heavily ornamented coffering. A fire in 1930 destroyed the roof and caused the plaster ceiling to fall. Two pilasters based on the order of the North Porch of the Erechtheum survived the fire and now frame the apse, the head of which was carried into a curved recess above the original ceiling line. The gallery supports are then wood columns comprised of a cluster of palm leaves for flutes, running over at the tops and forming a capital. A small wreath is placed above each one and the whole is bronzed and supports a light entablature. The gallery in turn is supported in the basement by a series of arched brick walls. The stained glass windows are highly decorative at the first floor with simpler colored plate glass rectangular windows at the balcony level. There are a total of four window bays along the North and South Elevations. Basement access is through an exterior door at the southwest corner. The addition of the Sunday School Building covered the north side of the west façade of the Cathedral. The south side of the west façade is still exposed. A tall, narrow wooden door still provides access from the Sanctuary to the exterior of the building on the south side of this façade.