San Simeón Piccolo Church
That church directly across the Grand Canal from the train station with the green oxidized dome and Neoclassical facade is the San Simeon Piccolo, rebuilt in 1718–38 by Giovanni Scalfarotto (in a vague imitation of Rome's Pantheon) on the site of a 9th-century church.San Simeon Piccolo (technically named SS. Simeone e Giuda) is actually rather unimportant as far as Venice churches go, but it is most people's first view of Venice—and, if you've a long wait for your train, the thing you end up staring at longest—so it begs to be identified.Closed for what seems like decades (most of us, actually, had long assumed it to be deconsecrated and boarded up permanently), it has recently had some restoration work done on the striking green (oxidized) copper dome and has reopened to the public.