As the 10th anniversary of the Sept. 11, 2001, terrorist attacks nears, there will be gatherings at the National September 11 Memorial in New York City, at the Pentagon Memorial in Washington, D.C., and at the Flight 93 National Memorial in Shanksville, Pa.

Many museums around the country also are planning exhibits and activities that give the public an opportunity to remember and reflect on the events of that fateful day. Here are a few places to visit:

Smithsonian Institution’s National Museum of American History

A glimpse of our changing natural environment and how humans may be impacting it.