Get ready to lose yourself in the vibrant maze of cobblestone streets that make up the Parte Vieja, the true heart of San Sebastián. This is where the city's pulse is strongest, with historic buildings like the Basilica of Santa María and the lively Plaza de la Constitución setting the scene. Your main mission here is to dive into the world-famous pintxos culture; just wander from one packed bar to the next, sampling the incredible bites that have made this neighborhood a global culinary destination.