It has been forty years since "Saturday Night Fever" first captivated audiences.

To mark the milestone, fans headed to Bay Ridge to dance the night away at the club where some of the films iconic dance scenes were shot.

"2001 Odyssey" closed a long time ago — the space is actually a Chinese restaurant these days.

But for one night only, it was a disco inferno.

"It's just bloody amazing, I mean, to me it was just, you know, another movie. I had fun. It was great, but there's something happening with the particular picture that it's a — you can't explain it. It's a big mystery."

The event drew a big crowd — including former mayoral candidate Nicole Malliotakis, Brooklyn Borough President Eric Adams and Councilman Vincent Gentile.