Quito’s Independence Square in the historical downtown area is beautifully lit up at night. The square was designed in Spanish colonial style – with the presidential palace facing the Cathedral, adjacent to the City Hall. There are walking tours during the day when the square is quite active, but at night there aren’t too many tourists around. The Government Palace itself was a hive of activity well past 10pm with motorcades coming and going along with the roar of security on motorcycles who keep the palace (and the sqaure) relatively safe.
You can get an excellent view of Independence Square and its luminous churches over dinner by exploring the heights of Quito in the Parque Itchimbia area. It also happens to be a short cab ride from La Ronda Street which too glows brightly throughout the night. You can see some more of the bright buildings from Independence Square and downtown Quito in my album here.