Despite its name, it's actually not the oldest part of the city (that honor belongs to Antiguo), but it is the most lively. Parte Vieja's pedestrian-friendly streets are flanked by centuries-old buildings that house a plethora of restaurants, shops and bars. It's considered the best nightlife spot in San Sebastian, as well as the best place to grab pintxos (the local term for light bites, similar to tapas). These two tend to coincide among locals, who begin their nights out pintxos barhopping.