Sure, City Hall has its wee observation deck with its 15-minute window for viewing. And the skyline view from the 33rd floor of the Loews is the worst-kept secret in town. But with its opening at One Liberty Place on Saturday, Philadelphia gets its first grown-up observation deck

Long before One Liberty Place leveled the area with sky-high apartments and upscale shopping, Ranstead Street used to belong to Billy Krechmer. His little jazz club burned with Swing and Dixieland brass for over 28 years. Music historian and archivist Jack McCarthy has the skinny on this long-lost gem