By John Metcalfe
Bay Area News Group
Some folks yearn to see Michelangelo’s “David” at the Galleria dell’Accademia. For others, basking in awe over a Union Pacific “Big Boy”—the largest steam locomotive ever built—is as high as art can get.

Some folks yearn to see Michelangelo’s “David” at the Galleria dell’Accademia. For others, basking in awe over a Union Pacific “Big Boy”—the largest steam locomotive ever built—is as high as art can get.