Which carnival is the oldest? Gee, if you guessed "Venice," you'd be right. I found this on the website of the Pittsburgh Tribune-Review:
"...Venice claims to have the oldest carnival tradition, with laws establishing the holiday dating back to the 13th century. This year, the Venice carnival -- known for elaborate masks and costumes -- takes place Feb. 17-28. Events include masked balls, music and dance performances, gondola parades, formal dinners and children's celebrations."
Too bad they don't have a theme!