MGLC, the International Centre of Graphic Arts, sits inside Tivoli Castle at the edge of Ljubljana's main park. Its focus is printmaking, posters, artists' books, and contemporary graphic work, a useful shift from the broader national museums in the city centre.
The location is half the pleasure. You can walk up through Tivoli Park, see an exhibition, and then continue into the gardens or toward Rožnik Hill. It is especially good for travellers interested in design and works on paper rather than another general art collection.