Consider Union Station, owned by USDOT but leased to an operator, for an interview location, something something transportation and infrastructure.
Bring along Elaine for a segment.
https://en.wikipedia.org/wiki/Washington_Union_Station
Appears to be available after 6:00pm on Sundays.
Tie in the President's executive order on Classical architecture as you select interview locations in DC and around the country.
"Trump’s Beautiful Proposal for Federal Architecture"
"The classicists hope to address a problem that the architecture establishment does not see as a problem."
https://www.theatlantic.com/ideas/archive/2020/02/the-case-for-making-federal-buildings-beautiful-again/606829/