The lobby of architect Melvin Grossman's classic Fifties hotel is a monument to space-age design, space-age glamour, and just plain space. Think MiMo (Miami Modernism) meets Grand Central Station. Massive decorative columns hold up an imposing plaster canopy in the center of the room. Underneath it five separate islands of couches and chairs float on a sea of vintage marble tile. A full-size hotel bar runs along one wall. Overlooking the bar is a landing big enough to be its own lobby. And if that's not enough to convey the sense of limitless optimism that fueled the Fifties: Large, curved window walls look out over the enormous pool area and onto Collins Avenue, giving the illusion of even more space. Whoever said bigger isn't always better never set foot in here.