I love the sunlight in this photo. (And... I just loved the sunlight that day!) : )
Just beyond the Roman Forum is the Altare della Patria, including the tomb of the unknown soldier - Il Monumento Nazionale a Vittorio Emmanuele (with eternal flame). This monument is very central in the city and overlooks Piazza Venezia.
The Piazza di Spagna is at the bottom of the steps (where I stood to take the two photos above) and at the top of the staircase is another piazza with a church - Trinita dei Monti.
Interesting new fact that I just read --> The Spanish Steps are the widest staircase in Europe! (Spanish Steps - Wikipedia article)