These three projects accompany my review of SOM: Architecture of Skidmore, Owings & Merrill , published by Monacelli Press. Photographs of St. Alban's School are by Robert Polidori. The 100-year-old St. Alban's School in Washington, D.C. hired SOM to add 25,000 sf (2,300 sm) and renovate an additional 30,000 sf (2,800 sm) of its scenic campus on the grounds of the National Cathedral, designed by Frederick Law Olmsted, Jr. The architects were inspired by Olmsted's framing of D.C. landmarks and network of garden walkways ("pilgrim paths") and envisioned the building as a series of interior and exterior passages linking the low campus with the main entrance, a difference of 60 feet (18m). Marriott Hall, as the new three-story building is known, is inserted between four buildings, linking itself with each. The primarily glass building is also clad in a blue stone that reiterates the older structures on campus. Like other SOM schools in the northeast,...