Rome has never ceased to add new architectural layers to its topographical fabric, with works carried out in often decentrated areas, in order to requalify its function and adapt the metropolis to the contemporary era. Here is a summary map of the most important works.
The Roman Colosseum offers three or four points of view totally different from each other. The most beautiful is perhaps what comes to the curious when he is on the arena where the gladiators fought, and sees the immense ruins that arise around before. What mostly impresses me is the blue sky so pure as it appears through the windows of the upper part of the building.
Stendhal "Roman Walks - Colosseum"
The first quarter of Rome is “Monti” (mounts), so called as its confines once comprised the Esquilino, Viminal, part of the Quirinal and the Celio hills. It is the most ancient quarter of Rome.