Several roads in Mount Vernon will close around 11:30 a.m. and the parade will kick off at 2 p.m. at the Washington Monument.

Celebrate the Irish at the parade or a 5K, laugh the night away, learn about where math and baked goods intersect or get transported musically back in time.

As St. Patrick’s Day approaches, Baltimore transforms into a sea of green. While the holiday began as a religious observance, ...