Shower deck  

Measuring 6 feet by 9 feet, this former light well functions as an outdoor shower off a master bedroom in a San Francisco Victorian. A tall outside wall hides it from view; you get to it through French doors.

After owners Alison and David Cameron moved in, they hired a plumber to hook up the shower. The redwood 2-by-6 decking serves as duckboard: water trickles between the boards and falls to a lower area with a drain.

The deck opens to the sky and makes a welcoming, wind-sheltered location for houseplants that periodically come out for a shower of their own. A shelf along one wall provides extra space for smaller plants.