While the glory days of the Spanish conquest have ebbed into the Peru's uneasy past, its capital remains a major modern metropolitan center with all the headaches that entails. Mass transit ranks high among the problems it is struggling to bring under control. Currently, the city has undertaken an ambitious public works program that is designed to transform the chaotic road system into an organized network of upgraded thoroughfares and efficient mass transit. The 20-year plan, an extension of efforts begun in the mid-1990s, has begun to take physical form with the Miguel Grau Freeway in the heart of central