The Plaza on DeWitt is a 407 unit condominium property at 260 E. Chestnut Street in the Streeterville neighborhood of Chicago.
It was the first building in the world to implement the tubular construction, later used for the World Trade Center. Originally called the DeWitt-Chestnut Apartment Building, it was designed by Bangladeshi-American engineer Fazlur Rahman Khan while he was working for Skidmore, Owings & Merrill. It was completed in 1966 as a residential apartment building, and was converted to condominiums in 1975. The 43-story tower accommodates 407 residences and is clad in travertine marble. On the ground floor, French bistro Le Petit Paris serves traditional French cuisine.