WARNING: The following article contains spoilers for the Season Three finale of Gotham, which aired Monday on Fox.

There's a lot to unpack from Monday's fast-paced, even manic, Season Three finale of Gotham, in which the city was pulled back from the brink of madness, Ra's al Ghul emerged from the shadows, two longtime supporting players seemingly died and a classic DC Comics villain was teased. But amid that whirlwind of developments -- really, those barely scratch the surface -- we can be excused for overlooking an origin for an iconic Gotham City location.

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With the city no longer gripped by the Tetch Virus, Fish Mooney apparently dead (again), and his rival/twisted love interest Edward Nygma on ice (quite literally), Robin Lord Taylor's Oswald Cobblepot turned his attention to his own future, and criminal empire, by hatching plans for the Iceberg Lounge, a setting familiar from comic books, animated television and video games.

Introduced in 1995 in DC Comics' Detective Comics #683, the upscale nightclub has served as a legitimate business front for The Penguin's criminal endeavors. Cobblepot opened the Iceberg Lounge at a time when he had tired of his life of crime, but it soon became clear the classic Batman rogue hadn't completely changed his ways; the location is used to traffic in illicit information and stole goods. The spacious, two-story restaurant and lounge is designed to reflect Cobblepot's own quirks, with a prominent iceberg-like sculpture at the center of a pool that houses seals and penguins.

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In the Gotham finale, the name and logo of the Iceberg Lounge aren't inspired by Cobblepot's much-despised nickname, but rather the club's intended centerpiece: Edward Nygma, encased in ice by Victor Fries after his plot to kill Cobblepot came unraveled. Considering the pace of Gotham's twists and turns, it's doubtful Nygma will be the main attraction of the swanky nightclub for long.

Beyond its eye-catching decor, the Iceberg Lounge frequently has been depicted as having a private dining area upstairs where The Penguin can oversee the nightclub, as well as a secret office, armory and a quiet room where Cobblepot can (ahem) interrogate special guests.

Outside of the comic books, the Iceberg Lounge has been featured in animated form on Batman: The Animated Series, Batman: Mystery of the Batwoman, Justice League Unlimited, Batman: The Brave and the Bold, Batman: Assault on Arkham, and The LEGO Batman Movie. The location has also appeared in the Batman: Arkham video game series and in DC Universe Online.

Its expected arrival in the fourth season of Gotham would mark the Iceberg Lounge's live-action debut.