PHILADELPHIA — Brian Dwyer holds the Guinness World Record for largest collection of pizza memorabilia. He's also the driving force behind Pizza Brain, which he calls the first pizza museum in the US. The quirky Philadelphia establishment is part art gallery, part restaurant. It's a place to enjoy a slice or two of artisan pie while looking at pizza-related photos, records, knickknacks and videos. “We thought it was a funny idea, and we started doing some research,” Dwyer said. “And when we discovered that nowhere on earth was there a physical place, a monument built to pizza, we said, ‘This is going to be huge.'” Hundreds of people turned out for the Sept. 7 grand opening. One wall is covered with framed pizza-related photos and magazine covers; another boasts dozens of vinyl records, like the soundtrack to “Mystic Pizza.” Display boxes show off pizza-bearing figurines from Homer Simpson and Spider-Man to the Tasmanian Devil and Pillsbury Doughboy. A cluster of small TVs plays pizza-related shows. — AP