The Big Top, or Grand Chapiteau, is a large climate-controlled tent that can seat over 2,600 spectators. The tent travels with Cirque du Soleil on their tours. Baltimore''s Grand Chapiteau makes its home at Westport Waterfront, a mixed-use development on 50 acres along the Middle Branch of the Patapsco River in Baltimore. Wesport Waterfront is a green urban environment that includes residence … Mores, office space, retail and restaurants, as well as outdoor spaces