Three years of renovations are coming to an end at the National Gallery of Art’s East Building, which makes its updated public debut on September 30.

Galleries in the I.M. Pei-designed building have been closed since 2013 as it underwent renovations and construction of 12,250 square feet of new space. The additions include two towers of galleries and an outdoor sculpture terrace (prominently featuring an electric blue rooster entitled “Hahn/Cock”).

A quirk of scheduling guarantees that the re-opening of the galleries (the atrium has been open to the public during the restoration period) will be overshadowed by the inauguration of the much-anticipated African American History And Culture Museum less than week before. But the National Gallery is pressing forward with the celebrations, which also commemorate the museum’s 75th anniversary.

Three concerts are planned for opening weekend, including one from Phillip Glass, when the permanent collection is unveiled in the new spaces along with three new temporary exhibitions:

“In the Tower: Barbara Kruger will be on view through January 22, 2017. It is the latest in a series of exhibitions that focus on development in art since mid-century. Two exhibitions will appear in newly renovated spaces designed to accommodate the interchanging of works of art. Photography Reinvented: The Collection of Robert E. Meyerhoff and Rheda Becker, on view through March 5, 2017, brings together a pledged gift of 35 works by critically acclaimed and important artists that have changed the course of photography through their experimentation and conceptual scope. Los Angeles to New York: Dwan Gallery, 1959—1971, on view through January 29, 2017, will feature the remarkable career of gallery owner and patron Virginia Dwan for the first time in an exhibition of some 100 works, including highlights from Dwan’s promised gift of her extraordinary collection to the National Gallery of Art.”

The museum also has weekend of community celebrations planned for Nov. 5-6, which will include performances, tours, sketching, and other activities.

The Gallery will debut a new “after-dark” programming series, dubbed Evenings at the Edge, from 6-9 p.m. on the second Thursday of every month from October 13 until April 13, 2017. Unlike many other nighttime museum events, admission and all activities will be free (though food and drink will be available for purchase).

The National Gallery of Art’s East Building will officially re-open on September 30, including three opening weekend concerts. A community weekend is planned for November 5-6. The Evenings at the Edge series debuts on October 13. See the National Gallery’s website for more information.