There’s already a black-and-white version of this photo in the “Roman Holiday” post, but the colors are so pretty I think it bears re-posting.
The Spanish Steps were built around 1725. They get their name from their proximity to the Spanish Embassy.
Incidentally, see the peach-colored palazzo immediately to the right of the stairs? That’s where John Keats died of tuberculosis at the age of 26 in 1821.