Your typical view of Venice
San Marcos square viewed from the harbour area. To the left you have the Doges Palace and then the Basilica di San Marco which give the square it's name.
The square is really the heart of Venice and the fancy restaurants around it even got live pianists contributing to the atmosphere.
View of San Giorgio Maggiore located on an island opposite to the San Marcos square with it's 16th century church.
The south western part of the Venice main island is filled with more modern infrastructure such as a cruise ship harbour and the police head quarters.
View of the entrance and inside of San Marcos Basilica. Much of the interior decorations is clearly influenced (and in many cases looted from) the Byzantine empire which makes Venetian art unique in Italy as it draws on Eastern as well as Italian influences.
The Doges palace is lavishly decorated and beautiful from both an artists as well as an engineers perspective. This main chamber was for many centuries the largest chamber without pillars in Europe.
Some more decoration in the palace.
Gondoles may seem romantic but the more narrow channels are often crowded and a lot of tourists will photograph you. Not to mention that the view really isn't much better than what you get from walking along the channels.
And yes, Venice is really built around boats. DHL, police, ambulances and even firefighters rely on boats.