A tourist card can make it convenient and economical to visit multiple attractions in Madrid if you are there for a longer stay and plan to visit many places.
And like most cities, tourist cards can be expensive. So it is important to do your homework and decide if you should buy a tourist card, and which ones might suit your Madrid trip best. The main ones are Madrid Card, Madrid Travel Pass and Art Walk Pass.
Read reviews of Madrid tourist and travel passes to make your decision. You may discover that you do not need one at all, or you may find one that you did not know about, that suits your purpose perfectly.