One of the few modern landmarks of Valparaíso, the Congress is pretty controversial: it was built on one of Pinochet's boyhood homes.
Wikipedia (Spanish) https://es.wikipedia.org/wiki/Congreso_Nacional_de_Chile#En_Valpara.C3.ADso
Address Av Pedro Montt, Valparaíso, Valparaíso Region, Chile
Coordinates -33°2'52.06" N -71°36'22.127" E