During the 19th century, several factors increased the importance of the square. The municipality moved to a building on the north side of the square after 1819, and towards the end of the century facilities like the D. Luís Bridge (1887) and São Bento Train Station (1896) were opened nearby. Liberdade Square was a political, economical and social centre for Porto.In 1866 a monument dedicated to King Peter IV, a monarch closely linked to Porto, was inaugurated in the middle of the square. The monument, by French sculptor Anatole Calmels, consists of a statue of Peter IV riding a horse and holding the Constitution that he had fought to protect during the Liberal Wars.The appearance of the square was much altered after 1916, when the municipality building was demolished and the Avenida dos Aliados, a modern boulevard, was built to the north of the square. The buildings around Liberdade Square and the avenues are occupied by banks, hotels, restaurants and offices. It is an important tourist attraction of the city