Santurce, originally named ''San Mateo de Cangrejos'' (Saint Matthew of the Crabs), was a settlement for freed African slaves during the early days of the city. After Pablo Ubarri sought permission to link San Juan with Río Piedras proper via steam tramway in 1878, the time it took to travel between both points were shortened and thereby stimulated the colonization and growth of the district. At the beginning of the twentieth century an electric trolley was installed, the township was split into three parts, and its main settlement, merged with the city, was renamed using the Spanish spelling of Santurtzi (''Saint George'' in Basque), Ubarri's birthplace in Vizcaya, Spain. The "Museo de Arte de Puerto Rico" (Puerto Rico Museum of Art) and other important cultural venues are located in Santurce.