The Historic New Orleans Collection/Williams Gallery (New Orleans)

533 Royal St., Tuesday through Saturday (excluding holidays) from 9:30 a.m. to 4:30 p.m., and Sunday from 10:30 a.m. to 4:30 p.m. (504) 523-4662. Online: www.hnoc.org.

“The 18th Star: Treasures from 200 Years of Louisiana Statehood,” through Jan. 29, 2012. Features an array of signature items from the HNOC to tell stories that have defined Louisiana since its entry into the Union on April 30, 1812 as the 18th state.

“Prospect.2 art installation in Brulatour Courtyard,” Wednesday through Sunday (excluding holidays), from 6 to 10 p.m., through Jan. 29, 2012. New media artist Dawn DeDeaux employs her sense of space, light and media to transform the courtyard into “Goddess Fortuna and Her Dunces In An Effort To Make Sense Of It All.”