Explorers (DS9 S3 E22) was recommended by Miyabi, and by Hoofburd, who says:
"Does this episode have the most impact on the show's plot? No. Is it the most dramatic of DS9's episodes? Also no.
But it does have Sisko being a giant nerd and engaging in wanton acts of experimental archaeology (or dare I say: creative anachronism) while going on a father-son trip.
As someone who engages in involved, hubris-fueled historical projects themselves, this was possibly the closest Trek has come to just dropping me on a screen."
Explorers first aired on May 8, 1995, written by story by Hilary J. Bader, teleplay by René Echevarria, and directed by Cliff Bole