Klaipėda, Lithuania.
May not count, as another DDF member been there (with me).
Old style port town next to the Baltic sea.
We conducted Purim for the little shul there.
While we didn't have a minyan, the few that were there treated us with much undeserved respect (we were Bochurim then)
Felt like back in the 1700's, when a more learned person would pass through a shtettle, and people would ask them to share Torah etc...