By their nature, doors are a manageable size for sketching and express a lot.
Here are a few sketches from my travels.
Nashville, TN
Basel, Switzerland
Paris, France
Los Angeles, CA
Basel, Switzerland
Amsterdam, The Netherlands
Blacksburg, VA
Paris, France
Washington, DC
Blacksburg, VA
Venice, Italy
Basel, Switzerland
Washington, DC
San Francisco, CA
Washington, DC
Washington, DC
Washington, DC
Marburg, Germany