The church's cornerstone was laid in 1910. Although it was part of Mr. Goodhue's original plans, the Peace Tower was not added until 1921, at which time it was erected as a memorial to those who served in World War I. The Parish Hall, Baptismal Chapel and South Aisle were built in 1929. In 1954 the Parish Hall was remodeled to provide classrooms for a growing Church School. The most recent addition was the Columbarium which was added to the south of the Church, in 1961.
Above the main door is a statue of St. Mark which was sculpted by the noted artist Lee Laurie who also created the two stone corbels at the base of the Chancel Arch. Among its exquisite stained glass windows are three designed by Louis Comfort Tiffany which are in the Resurrection Chapel. Two mosaic reredos and an alter mosaic from the Tiffany Studio are in the same chapel. A 16th century terra cotta by the Italian artist Jacopo Sansovino, which is in the Baptismal Chapel, was purchased from the William Randolph Hearst Estate and donated as a memorial by a parishioner. The Peace Tower houses four English Carillon Bells, one dating form 1905. The other three, given in 1930, are rung on Sundays, Festival Holy days and other days of celebration. One of the few surviving Aeolian Skinner organs graces the chancel. These and the wonderful wood carvings in the church have inspired and delighted visitors from around the world.
On October 24, 1984 the church was presented an award for architectural excellence by the American Institute of Architects.