A multi-phased restoration is currently underway at the National Historic Landmark Church complex. The first phase included the interior and exterior restoration of the Lady Chapel. Constructed in the mid-19th century, St. Mark’s Church is among the country’s most important Gothic Revival churches. Built primarily of sandstone, St. Mark’s includes the main Sanctuary Building as well as the Parish House, Rectory, and the Lady Chapel, all of which were included in a preliminary master plan for preservation and improved space utilization.