As a commenter pointed out, this weekend presents a unique opportunity for commemorating the anniversary of September 11, 2001. For the first time since that day, the public will be allowed to see the areas of the Pentagon into which Flight 77 crashed.

The special tours will be held tomorrow, September 10, between 10 am and 2 pm. They’ll convene at the south parking lot — here’s a map showing its location relative to the Metro. Visitors will get to see the American Heroes Memorial, the cornerstone that has been placed at the point of impact, and a model of the planned Pentagon Memorial. The tour is free and open to the public, but photography won’t be allowed and any bags you bring may be searched.

If you’d like more information, the Pentagon Tour Office can be reached at 703-697-1776.