 The latest infrastructure projects of this type have focused on the southwest portions of the area, on República de El Salvador, Talavera, Correo Mayor, Mesones and Pino Suárez streets, mostly focusing on repaving and improving the outdated drainage systems.In the process, artifacts dating from as early as the pre-Hispanic period have been unearthed.All over the historic center, streets have been pedestrianized, buildings have been restored, and new museums opened.