Originally a Roman city built in AD 102 by Emperor Trajan, Nikopolis-ad-Istrum was destroyed by Slavs in the late 6th century; the extensive ruins include streets, towers, gates, the city square and town hall. Veliko Târnovo’s Archaeological Museum displays the site's best surviving artefacts.
If driving from Veliko Târnovo, head north towards Ruse and take the signposted turn-off to the left (west) after about 20km. This access road is rough in parts. By bus, take the same northerly route, and dismount at the turn-off to Nikyup; from there, it’s a 4km signposted walk. In summer, check opening hours ahead in the Veliko Târnovo TIC.