Architects assigned to create an addition to an existing structure often face a delicate task.

George Baird is a principal in Baird Sampson Neuert Architects and was the dean of the John H. Daniels Faculty of Architecture, Landscape, and Design at the University of Toronto until 2009.

Alexandra Lange is a critic, journalist, and architectural historian. She is the coauthor, with Jane Thompson, of Design Research: The Store That Brought Modern Living to American Homes.

Museum expansions designed by prominent architects often result in a new main entrance to the addition’s grand (and new) lobby/party hall.

In designing St. Anthony, a privately funded hospital in the wooded area outside Seattle, the architects at Zimmer Gunsul Frasca (ZGF) asked themselves, “What would you want to see in a five-star hotel?” says ZGF interior designer, Anita Rossen.