In 1985, the boards of Cook Children's Hospital and the Fort Worth Children's Hospital voted to merge the two facilities. After the merger the combined board voted to find a new site and construct a new medical center. The site selected was adjacent to the old Fort Worth Children's Hospital and construction began on the new building in 1987. In 1989, the new Cook Children's Medical Center opened. It was designed by David M. Schwarz from Washington D.C. and the building features different colors of glazed brick with the corners and central bays of the building capped by pyramid roofs. On the rear of the building, large mosaic tile graphics depict trees. At night the building is illuminated by blue lights vertically placed in the corners of the entrance tower and each of the pyramids outlined in blue neon. The lighting has been expanded to include LED's shining up and down on the main facade. When the hospital opened, it had 183 beds. In 2001, the old Fort Worth Children's Hospital building was demolished to make way for a new 81 bed patient wing. That wing opened in 2003. Another major expansion occurred in 2012, when the Dodson Specialty Clinics opened to the northwest of the original building. The total number of beds is up to 429. Now, the emergency room is being expanded to the southwest of the original building. The campus now forms a "U" shaped building surrounding the main entrance to the hospital, which is an extension of Cooper Street.