The International Poster Gallery celebrates its 20th anniversary this month with Tour de Force, an exhibition and sale of 40 rare and significant posters from the archives.

Dear Boston is an exhibit featuring select pieces from the Boston Marathon memorial at the Boston Public Library.

The inaugural Boston Design Week is in full swing, and we've already enjoyed several days of interesting, educational showcases, workshops, and exhibits. With a week left in the fest, there are still more design-oriented events than you could possibly attend. Here are a few of our highlights. Check out the full calendar here.

The winter months are an ideal time to explore Boston's galleries. Here are five exhibits worth checking out this month.