Breathing Space: The Architecture of Pneumatic Beings with Tim Altenhof

Today we're joined by Tim Altenhof, a Berlin-based architect, teacher, and author, currently serving as a senior scientist in architec­tural theory at the University of Innsbruck. He is the author of Breathing Space: The Architecture of Pneumatic Beings (New York: Zone Books, 2026), which we explore together in this episode.

Join us as we explore the innovative use of geocaching and GeoTours in heritage tourism with Emily Huebner from the Heart of the Civil War Heritage Area. Discover how these tools engage visitors, promote regional history, and support preservation efforts, especially around the 250th anniversary of the United States. Learn more: https://heartofthecivilwar.org/explore/250th-geotour/

We are talking with Elicia Garske, a 2022 recipient of the Harrison Goodall Fellowship. Elicia shares her project, a summer program to connect skilled preservation contractors with young adults interested in learning more about this line of work. Join us to hear how her project unfolded and what lessons she learned along the way. Applications for this year's fellowship are due March 16th. Learn more at https://historictrades.org/goodall/

Today we're joined by Bruno Carvalho, Chair of the Program of History and Literature professor at Harvard University, where he teaches courses on cities. He is the author of The Invention of the Future: A History of Cities in the Modern World on the history of urbanization—from Lisbon to New York, Paris to Rio de Janeiro, and Buenos Aires to Lagos and Porous City: A Cultural History of Rio de Janeiro.

Today we’re traveling back to December 23rd, 1783, to the Maryland State House in Annapolis, a quiet moment that spoke louder than any battle: General George Washington’s resignation of his military commission.It’s easy to remember Washington as the victorious commander of the Continental Army, but what he did after the war was just as revolutionary. When he handed back his commission to Congress, he voluntarily gave up power, something almost unheard of in the 18th century, especially for a man who could have ruled as a king.In today’s episode, we’ll unpack why that decision was so significant — how it set a precedent for civilian control of the military, influenced the founding of the Republic, and helped define the very idea of American leadership. We’ll also look at what this moment meant for Washington himself — and for a nation still learning what it meant to be free.Our guest is Dr. Lindsay Chervinsky, a presidential historian and the Executive Director of the George Washington Presidential Library. She’s the author of the award-winning book The Cabinet: George Washington and the Creation of an American Institution, which explores how Washington built the presidency and set lasting precedents for executive power. Her work has appeared in outlets like The Washington Post, TIME, and The Wall Street Journal, and she’s a frequent commentator on how early American leadership continues to shape our politics today.Her insight into Washington’s character, decision-making, and vision for the new republic makes her the perfect person to help us understand the deeper meaning behind that quiet yet revolutionary moment in Annapolis, when the most powerful man in America chose to give up power.

Today we're talking with the president and CEO of the Historic Savannah Foundation, Collier Neeley about his path to preservation and the work of the Historic Savannah Foundation, a legacy organization when it comes to preservation here in the United States.

You are once again listening to PreserveCast. Today I'm joined by archaeologist, professor, and a great friend, Dr. Kat Sterner, an assistant professor of anthropology at Towson University and the director of the Baltimore Community Archaeology Lab. This episode covers community archaeology and its impact.

Welcome to Revolution@250, a special production of PreserveCast, in partnership with Preservation Maryland and the Maryland Center for History and Culture. Our hosts are Katie Caljean, President and CEO of the Maryland Center for History and Culture and Nicholas Redding, host of PreserveCast and President and CEO of Preservation Maryland. In 1818, 42 years after the shot heard around the world cracked across a Massachusetts field, John Adams was asked to reflect on the meaning and impact of the American Revolution. In this brief letter, Adams explained that,   The American Revolution was not a common Event. Its Effects and Consequences have already been over a great part of the globe. And when and where are they to cease? But what do we mean by the American Revolution? Do we mean the American War? The Revolution was effected before the war commenced. The Revolution was in the Minds and Hearts of the People.  Revolutionary thought and thinking did not end with the Treaty of Paris, nor did it begin at Lexington and Concord. In this special podcast series, we’ll explore the revolutionary ideas that were catalyzed and accelerated by the self-evident idea that all men are created equal and what bold and new thinking that declaration has forged.  In our first episode we discuss abolitionist John Brown with historian Dennis Frye.    

Today we talk with Benjamin Takis, founding attorney of Takis Nonprofit Law, a Washington, D.C.–based firm serving nonprofit organizations in tax, governance, employment law, and business transactions. Ben explains why strong legal foundations and smart governance are critical for nonprofits — especially those stewarding historic places. As co-founder of Sustainability Education 4 Nonprofits and a frequent national speaker on nonprofit law, Ben brings practical guidance to help organizations stay compliant, resilient, and focused on their mission.

Gene Kansas, an award-winning cultural developer, preservationist, and social entrepreneur, joins us to discuss his book Civil Sights (UGA Press, 2025), which examines the Sweet Auburn Historic District in Atlanta, the birthplace of Dr. Martin Luther King Jr. Sweet Auburn was a hub of Black commerce, community, and civil rights activism that helped shape Dr. King’s early life. As the district declined after the 1960s, preservation efforts emerged to protect its history, including MLK’s childhood home, culminating in its designation as a National Historic Landmark in 1976 and ensuring this powerful civil rights landscape endures.