Seattle-area parks generally offer abundant places to relieve oneself?old brick Tudor-style restrooms built during the Olmstead era or the WPA '30s; pressed-concrete monstrosities that generally date to the cheapskate '70s and '80s. For users of the Burke-Gilman Trail, however, micturition options are few along the 30 miles between Golden Gardens Park near Ballard and Marymoor Park in Redmond. That's why on any given Saturday or Sunday you'll find a swarm of bikers at Tracy Owen Station (aka Log Boom Park) at the north end of Lake Washington, where an unpleasant old restroom was recently razed and a sleek, modernist rectangle by local firm Arai Jackson Ellison Murakami took its place. Skylights, open clerestory windows, and wide entrances admit plenty of air and sun. The dark-shingled shoebox design is crisp and efficient, occupying a much smaller footprint in what the city of Kenmore considers its "flagship park." Replumbed, and relocated back from the shoreline, the new facility has a functional Bauhaus aspect: just a few stalls inside, plus a water fountain outside to refill your bottles. For men, there's no more tiptoeing in your cleated bike shoes across a permanent puddle of piss. It's a clean, well-lighted place where you might expect to see Hemingway, or Mies, at the urinal next to you.?Brian Miller Bothell Way & 60th Place N.E., 425-398-8900, cityofkenmore.com