Several months ago, I started an Instagram (@DoorTour2k) to share pictures of doors that I had taken in Philadelphia. After a period, I began adding doors from other cities I traveled to and friends from all over began sending me pictures of doors to post to this account. Now, the account features doors from Oklahoma to Philadelphia, Amsterdam to Lisbon, and beyond. It has been a fun project and a puzzle was the perfect way to memorialize a selection of these doors.