The Seaside in Waterford, Connecticut, is a historic medical facility designed by Cass Gilbert for heliotropic treatment of children with tuberculosis. Listed on the National Register of Historic Places, the building is considered a well-preserved example of institutional Tudor Revival-style, and served various purposes including tuberculosis treatment, an elderly home, and a facility for the mentally disabled. Initially located at White Beach Hotel in Niantic, it moved to its current location in 1934. In 2014 Governor Dannel Malloy decided rebuild it as a state park. The site's significance lies in its architectural and medical history, representing the evolution of tuberculosis treatment.