Palacio de los Leones (Spanish, Palace of the Lions) is the name of the main municipal building of the city of Rosario, Argentina. The Palace is the seat of the executive branch of the municipal government. It is located at the corner of Buenos Aires and Santa Fe Streets, in front of Plaza 25 de Mayo (May 25 Square), and separated from the Cathedral by the promenade known as Pasaje Juramento (Oath Passage), which leads to the National Flag Memorial.