for me, anything related to local lithuanian culture was impressive since there is so little to see or do.
i guess st. casimir's fair left the biggest impression on me because there were so many people in the city (although it was freezing cold outside) selling all that traditional stuff like willow branches and honey cakes.
the day of the restoration of the state of lithuania impressed me the most because of the vibe of lithuanians. it was strongly felt, you know, all that unity and pride.
gates of yotva (yotvos vartai) it's like traveling back in time.
uzgavenes, because the snow was so beautiful in rumsiskes!