The Cathedral of Buenos Aires, officially known as the Metropolitan Cathedral of Buenos Aires, is the main Catholic church in the city. Located in the historic Plaza de Mayo, it serves as the seat of the Archbishop of Buenos Aires. The cathedral features a neoclassical facade and a stunning interior with beautiful altars and artwork. Construction of the cathedral began in the late 18th century, and it was completed in the 19th century. The building showcases various architectural styles, including Baroque and Rococo. It is also known for housing the tomb of General José de San Martín, a national hero of Argentina.