Sibiu is a Saxon-founded citadel deep in Transylvania, where a walled medieval old town of ochre townhouses, watchtowers, and rooftop 'eyes' surrounds two grand squares linked by covered passages and the wrought-iron Liar's Bridge.
Late spring (May-June) or early autumn (September) for mild weather, green squares, and the fewest tour-bus crowds.
Sarmale (cabbage rolls stuffed with pork and rice) served over a mound of buttery mamaliga and sour cream is the Transylvanian staple worth seeking out, ideally with a glass of local red wine.
Base yourself inside or just off Piata Mare or Piata Mica so you can walk the old town's cobblestones at night without needing a car.
Enter Piata Mica through the covered Passage of Stairs (Pasajul Scarilor) instead of the main road — it's the same medieval route Saxon merchants used between the Lower and Upper Towns, and it drops you right at the base of the Council Tower.
Read more in Sibiu Travel Guide: Transylvania's Fairy-Tale Medieval Old Town.