Maine Restaurant Week 2010 is coming to Portland! I can't wait. It starts March 1st, 2010, and goes on through March 10th, 2010. The Restaurant Week tradition may have started in New York during the early 1990's as a way to celebrate and promote local restaurants. It now appears in many cities (San Diego, New York, Portsmouth, Washington DC, Boston, Los Angeles, Denver, Portland, and many more) as a way for chefs to showcase their creations. Maine Restaurant Week.