At first, two Roman provinces divided what is now Bulgaria. Moesia, created under Augustus south
of the Danube, took in the north of the country as Moesia Inferior. The river was the
frontier: legionary camps and forts lined it, linked by a road along the bank, and Novae, 4 km
east of Svishtov, is one of the few fortresses on that line to have been excavated and opened
to the public.
The south was Thrace, a client kingdom of Rome until the emperor Claudius annexed it as a
province in AD 46. Its capital was Philippopolis, today’s Plovdiv, where several roads crossed
the Via Militaris, the highway from Singidunum (Belgrade) through Serdica (Sofia) to
Constantinople. Plovdiv still has its Roman theatre, odeon, stadium and aqueduct.
After Rome gave up Dacia beyond the Danube in 271, Aurelian set up a new Dacia south of the
river. Dacia Aureliana covered most of north-western Bulgaria, with its capital at Serdica, and
was later split into two provinces governed from Serdica and from Ratiaria.
Inland, Nicopolis ad Istrum, 20 km north of Veliko Tarnovo, reached its peak under Hadrian, the
Antonines and the Severans, and excavation there continues. In the south-east, Villa Armira
near Ivaylovgrad is one of the largest and most richly decorated Roman villas excavated in
Bulgaria.
Each page below says what is visible at the site today, whether it is worth the trip, and how
to get there.