Unfortunately I've never gotten a chance to travel to visit some of the well known spots. I'm in the NE USA and it's a bit of a Catch-22 scenario -- now that I'm old & capable of visiting local spots, there's nearly none left around here.
I feel the same way - missed the heyday of so many places... and now they are gone. Even some places I got to, were fading in glory by the time I was able to see them. Still, wouldn't change it for anything! Luckily, there's a bit of a resurgence - so new places arrive on the scene often. But tipping a drink to the Kon-Tiki Theatre & the Tropics (Dayton, OH), The Kahiki & The Grass Skirt (Columbus, OH), and the Bahooka (Rosemead, CA). Got to visit a few of these... but not all.
I remember driving past this place (as a small boy) in the suburb of Milwaukee where I grew up. By the time I was old enough to appreciate it, it had already been bulldozed to make room for a strip mall.