The AGO (as it's known) is among North America's top 10 art museums. It has the largest public collection of Henry Moore sculpture in the world, major works by Canadian artists, and works by Rembrandt, Hals, Van Dyck, Hogarth, Reynolds, Chardin, Renoir, Degas, Rodin, Matisse, Picasso, de Kooning, Rothko, Oldenburg, and others. Drop by the Anne Tannenbaum Gallery School on Sunday and explore painting, printmaking, and sculpting, or visit The Grange, an adjoining Georgian-style house built in 1817-18. COST: $6 suggested donation, or pay what you can.