You can input an NDB or PDB identifier and obtain a list of galleries in which that structure appears. Only NDB complexes with proteins have been sorted into these galleries. Please bear in mind that certain structures may not appear in all galleries, such as new structures which have not yet been mapped and structures which are inappropriate to a specific gallery (ie, a molecule which was created specifically to illustrate a structural nuance might not have been classified in a non-structural system, such as the Gene Ontology). Also, only the link to the first page in each gallery is given; you may have to use the gallery's navigation bar to see the image for your structure.