There's never anywhere to park in the North End anymore. But don't let that stop you from missing out on some of the best pizza in the neighborhood. Order a bbq chicken ranch or a spinach garlic pizza over the phone, hop into the car with a friend or two and drive on over. Have one person hop out and run in to grab the pizza while the other circles the block. Ernesto's will have you in and out before they even get halfway back. Super quick service and delicious variety. Amazingly fluffy crust, almost worth ignoring the rest of the pizza for.
I guess you could also take the T and walk there. That might work too.