Konrapa
Konrapa stands at the northern edge of the Düzce plain, where ancient Prusias on the Hypius commanded the route toward the Black Sea. Its Roman theatre, built against a hillside, recalls the city's classical prosperity. The settlement continued through Byzantine times and came under Ottoman rule in 1323, according to local accounts, when the frontier commander Konur Alp captured it. The district took a name associated with him, while the older city remained visible in its walls and theatre.