While there's no doubt that it is a big difference from watching a Knicks game or cheering on Manchester United, that is certainly the reason you should visit a bullfight when you are on holiday. When you are past that whole cruel-to-animals thing, you really need to look at regalos taurinos
since the art it is.
Madrid's bullring's official name is La Plaza de Toros de Las Ventas. It's amazing from an architectural point of view, an amazing red brick and hardwood mudejar-style structure exploding out of your ground in a residential neighborhood.
From your suits the matadors wear, on the whole spectacle using the audience waving their white handkerchiefs, to check out a bullfight is a good possiblity to offer an up-close encounter with a very unique and extraordinary (albeit somewhat barbaric) tradition. When you visit a bullfight you'll be either very interested and jump up and shout "Ole!" combined with the die-hard locals, or feel that the whole thing is often a barbaric and unjust setup that you'd want to distance yourself from. Many tourists check out the bullring only to leave after 30 minutes.
Las Ventas is located at they eponymous metro stop (Ventas, L2). You literally can't miss it. Bullfights take place weekly from March to October.
A ticket with a bullfight can be very expensive. The nearer to the bullring you might be sitting, the more expensive it really is. The value range is normally 200-15 euros. The lowest priced tickets are near the top of the stadium and there is no shade. But, you get a great introduction to the whole spectacle.