Discover the beauty and rich history of St. Matthew's Cathedral on our Saturday morning tour in the heart of Washington, D.C. Immerse yourself in the church's architecture, adorned with stunning stained glass windows, intricate mosaics, and soaring vaulted ceilings. Our knowledgeable guide will lead you through the church halls to highlight its significance in the city's history. ... Read more

Photo of the Nixon-Mounsey House, designated in 2022 through a partnership with the homeowners. Image courtesy of Justin Scalera, HABS. This January, join DCPL's Zachary Burt to explore the process of historic designation. Designating a historic site can be complex and overwhelming, as there are many aspects to consider when evaluating a site for historic designation. ... Read more

Join the DC Preservation League in-person at the MLK Jr. Memorial Library to learn how to research the history of your DC house and neighborhood using primary sources from The People's Archive. The People's Archive is the DC Public Library's local history research center that is full of unique documents relevant to scholars, genealogists, and ... Read more

Windows are a key part of the character of a historic building, but for a surprising number of buildings the original windows have already given way to replacements.  If historic windows survive, what are the issues we face in trying to keep them, and how should we evaluate a needed replacement?  Reasonable cost, operability, durability ... Read more