Downtown and Congreso neighborhood Daytime concentrates in this area most of the administrative and financial universe of the city. But a night, the lights uncover movie theaters and theater (mainly on Corrientes Avenue and Lavalle Street), restaurants, pubs, stores, bingos and nightclubs. It's from Plaza de Mayo that some of the bistori milestones of the country spread out, such as the seat o the National Executive Power (Pink House) and the Old Town Hall (1725), cradle of the city administration in the colonial time that at present has its headquarters in the Government Palace. The Metropolitan Cathedral (XVIII Century), of neoclassic style, and where the Libertador General San Martin Mausoleum is located, also stands out. Going down Avenida de Mayo, one of the best achieved architectonic and housing wholes of the city, one gets to the Congress Palace (1906), of unquestionable beauty and where the Senators and Deputies Chambers hold their sessions. The Obelisco (65 meters high, built in 1936) is embedded in 9 de Julio Avenue, the widest in the world and, a few blocks away, one can see the Colon Theater (1908), considered the most important in Latin America. The wide variety of activities, shows and entertainment, makes thousand of people walk along this area at all times.