The Palazzo is part of a larger complex, comprizing the Venetian Resort and Casino and a large convention center that was the second largest convention in the world when it opened in what year?
The Palazzo:  The hotel and casino are part of a larger complex (operated as one hotel) comprising the adjoining Venetian Resort and Casino and the Sands Convention Center, all of which are owned and operated by the Las Vegas Sands Corporation. Sands Expo:  It opened in 1990 across the street from the original Sands Hotel, was the second largest convention center in the world when it opened.
i don't know