building measures by . Its classroom spaces were capable of accommodating 200 to 300 students. The dormitory/boardinghouse located near the main school building measures by . Exterior The main building was constructed between 1854 and 1856 in the Greek Revival style. The three-story building has a rectangular plan that includes a square bell tower (belfry) centered above a gable-fronted main entrance. The gable roof includes a triangular-shaped wood pediment above the third-floor windows. The building's windowsills, lintels, and corner quoins are finished limestone, which contrasts to the rough-hewn stone walls. The north (front) facade of the building has three bays wide with two wooden doors flanking a single, ground-floor window. East and west facades are identical, with four double-height windows below four more on the third level. The south (rear) facade has two windows at the third-floor level. Interior The main building has a small entryway leading to a two-story chapel that runs the length of the building. The chapel includes double-height windows and a balcony, which crosses the north side of the room. The chapel ceiling is covered in wood panels. Stairs at each end of the entry hall lead to the upper floors. The second story includes two classrooms above the entryway and five additional rooms on the third floor. Stairs in one of the third-floor rooms leads to an unfinished attic. A ladder in the attic leads to the belfry tower. The cast bell was manufactured by J.A. Kelley of Franklin Brass Bell Factory, Madison, Indiana. Recognition The restored main building (classroom and chapel), now a public museum, was listed on the National Register in 1993 and declared a National Historic Landmark on February 18, 1997. The National Park Service, U.S. Department of the Interior, also lists the building as a Network to Freedom Site. In 2004 the Indiana Historical Bureau installed a state historical marker at the college to honor its role as one of the earliest educational institutions in the state to enroll students of all ethnicities and genders. Notable alumni Among the school's most notable African-American students was Moses Broyles, who became pastor of the Second Baptist Church in Indianapolis and an organizer of the Indiana Association of Black Baptists Churches in 1858. Broyles was a slave from Kentucky who purchased his freedom as an adult. Notable female students included Sarah B. Hoyt, who also studied at Oberlin College. She became a teacher and