 Over time, their productions have come to include solo performances, avant-garde theatrical events, new musicals, and world and New York premieres by American playwrights.In 1999, Second Stage Theater opened a new 296-seat theater at 43rd Street, designed by Dutch architect Rem Koolhaas.The Second Stage Theater Uptown series was inaugurated in 2002 to showcase the work of emerging artists at the McGinn/Cazale Theater at 76th Street.