 Under the leadership of Peña voters approved a $3 billion airport, the $126 million Colorado Convention Center, a $242 million bond for infrastructure, a $200 million bond for Denver Public Schools, and a 0.1 per cent sales tax to build a new baseball stadium for the Colorado Rockies.Many people worried that Denver was on the wrong track when the city's total bonded indebtedness peaked at over $1 billion.Mayor Peña worked together with the surrounding suburbs to market Denver as a vibrant city.