Built 2005. Description: The northwest and northeast Pavilions are minimalist black cubes designed to complement the neighboring Joan W. and Irving B. Harris Theater for Music and Dance. The northwest Pavilion houses the Millennium Park Welcome Center, as well as an Exelon energy display area. Together, the Pavilions provide enough electricity annually to power 14 star-rated energy-efficient houses in Chicago. Size: 6,100 sq. ft.