World Market Center first trade show to return in Las Vegas April 12, 2021 FacebookTwitterEmail LAS VEGAS (AP) — A new expo center has opened in downtown Las Vegas, marking a first step toward recovery after conventions and trade shows came to a halt last year due to the COVID-19 pandemic. A new $103.5-million Expo at World Market Center opened Friday ahead of five days of market show dates this week at the sprawling facility near the Spaghetti Bowl interchange on Interstate 15. The twice-a-year trade show draws thousands of home and gift industry professionals to Las Vegas to see new designs in furniture, bedding, lighting, flooring and home decor.