How has Venice changed in the past 100 years?

Question

How has Venice changed in the past 100 years?

Answer 1

Well, for one thing, it has sunk almost 10 inches, and the tides have increased 3 inches, causing frequent flooding, especially of Piazza San Marco.  

Pollution has caused damage to much of the outdoor art.  The Four Horses of San Marco had to be brought indoors because of damage from air pollution.

Answer 2

Its 100 years older