Art is a very broad term. Art can be paintings, architecture, or upholstery. Artists can be sculptors, chefs, or auto detailers. Anything that is made or done can be made or done artfully and thus become art if the viewer and/or artist deem it so. The most widely practiced and well establish art forms such as literature, painting, sculpture, and music are often displayed in the largest and grandest buildings in cities around the world.
Any book you could hope to read can likely be found at your local library, free of charge, or bought used on Amazon for dirt cheap. Thanks to projects like
Google Books, even out of print titles can be found online, for free no less. The greatest paintings, sculptures, and photographs from around the world are collected and periodically circulated in regional museums such as the Louvre, the MoMA, and the Getty. At even the largest museums, the entrance fee is either voluntary or waved on certain days, so as not to keep anyone from enjoying the collections. And if you're not near a museum, you can at least find a high-definition rendering for free with a simple search online.
But what about music? There are museums for physical artworks and libraries for books but there are very few public access centers for the enjoyment or history of music.
