The past? What a shame. Even in the most reserved places I've visited people aren't averse to a dose of pure fun like this. Whether to celebrate some local holiday or for the season, every so often you might see an advertisement for it.

[bright, worn paper still clinging to the wall, the date written long since passed. an idea, a ghost of what came by and through long ago, before it moved onward to chase the bustling vitality that only felt echoed in a building. here they were safe, here--ah, he's remembering too much.]

Without the aliens, of course.