The Porto Stock Exchange Palace is a national monument of Portugal and one of the most important buildings in the country. Built in the 19th century as the headquarters of the Porto Commercial Association, it is currently used as a conference and events center and houses an important art collection. Its impressive neoclassical architecture, with influences from Gothic and Baroque styles, includes an imposing façade and spacious rooms decorated with elaborate molds and sculptures. The main attractions include the Arab Room, the Nations’ Patio, and the Noble Staircase.