
Photos courtesy Dupont Underground
Thanks to the folks from Dupont Underground for sharing. You can sign up for tours here.
“These tours will explore the living history and conceptual reinvention of a DC hidden gem. Each tour will consist of a guided forty-five minute long experience through the tunnels under Dupont Circle, that once served as the only underground portion of the District streetcar system over fifty years ago. Tickets are $15 per person.”

19th Street entrance