Ching Ching Cheng painted each panel of her screen-printed Sriracha Hot Chili Sauces with a layer of the sauce, which changes color over time as it dries and ages. Courtesy of the Chinese American Museum hide caption

itoggle caption Courtesy of the Chinese American Museum

The Neue Galerie exhibit's empty frames represent paintings that were lost or destroyed by the Nazis. They appear beside works that survived Nazi rule, like George Grosz's Portrait of the Writer Max Hermann-Neisse (lower right). Courtesy of Hulya Kolabas for Neue Galerie New York hide caption

itoggle caption Courtesy of Hulya Kolabas for Neue Galerie New York

Joan Brown's 1970 Self-Portrait with Fish and Cat is the first image you see at the National Portrait Gallery's "Face Value" exhibit. Estate of Joan Brown/Courtesy of George Adams Gallery/National Portrait Gallery hide caption

itoggle caption Estate of Joan Brown/Courtesy of George Adams Gallery/National Portrait Gallery

Debra Jenson, 2, hanging from a hook in her grandmother's kitchen. "Over the next 35 years, I watched each of my cousins, then my own children and my cousins' children be dangled from that hook. Between the photo and watching it happen to others, this is a powerful 'fake memory' for me." Debra Jenson/Instagram hide caption

itoggle caption Debra Jenson/Instagram

In a letter, Mary Cassatt describes working on Little Girl in a Blue Armchair (1878) with Edward Degas. An X-ray of the painting reveals brush strokes unlike Cassatt's regular strokes. National Gallery of Art hide caption

itoggle caption National Gallery of Art

Rebecca Woolf takes a lot of photos of her children for her blog, Girl's Gone Child, but says she tries to not let the camera get in the middle of a moment. Courtesy of Rebecca Woolf hide caption

itoggle caption Courtesy of Rebecca Woolf

Viewers of Kara Walker's A Subtlety described the sculpture as "beautiful" and "the American sphinx." Another said, "She is so exposed and she's so vulnerable, but at the same time she has some grace and majesticness that is completely unapproachable." Andrew Burton/Getty Images hide caption

itoggle caption Andrew Burton/Getty Images

Jim Cummins' photo of Jimi Hendrix performing at Madison Square Garden in 1969 was used by Life magazine the following year for the guitarist's obituary. Jim Cummins/Courtesy of Image Fortress hide caption

itoggle caption Jim Cummins/Courtesy of Image Fortress

Two pensive women share a mysterious, intense moment in Raphael Soyer's 1980 Annunciation. Smithsonian American Art Museum hide caption

itoggle caption Smithsonian American Art Museum