The Roman castrum of Cumidava is one of Transylvania's most intriguing archaeological sites — a well-preserved Roman frontier fortress that once guarded the province of Dacia against Carpathian raids. History enthusiasts will find it a genuinely rewarding stop, where ancient stones and inscriptions bring the Roman Empire vividly to life.

The site sits on the middle terrace of the Bârsa River, roughly 4 km northwest of Râșnov, near the border with Vulcan commune. The terrain is open and gently rolling, offering pleasant views of the surrounding hills. In summer the landscape is lush and green; autumn adds warm golden tones that make the ruins look especially evocative. In spring and autumn, when crowds are thin, the place has a wonderfully quiet, contemplative atmosphere.

• Râșnov (town parking) — approximately 4 km northwest along a local road towards Vulcan commune, easy walking or driving

• The castrum covers 2 hectares, including its defensive ditches
• Two fragments of the famous inscription bearing the name 'Cumidava' are on display at the Brașov County History Museum
• The site is open access — no entry fee

Originally built from earth and timber after 106 AD, the fortress was rebuilt in stone after 126 AD — and those stone walls still stand today. In the 18th century locals called the ruins 'Erdenburg' (Earth Fortress) and villagers from Vulcan were advised to shelter within them in times of danger.