St. Paul Pioneer Press reporter and architecture critic Larry Millett is retiring after 30 years with the paper. Millett began writing a column on architecture and design in the mid-1980's, after a prairie school exhibit at Landmark Center stirred up an interest in architecture he had had since childhood. In the late 1980's, Millett wrote a series of columns on historic buildings the city had torn down, which he turned into a book called "Lost Twin Cities." Millett published his last column today. He says when he started at the paper, downtown St. Paul was in the throws of massive downtown urban renewal.