Gerulata was a Roman military camp located near today's Rusovce, a borough of Bratislava, Slovakia. It was part of the Roman province of Pannonia and was built in the 2nd century as a part of the frontier defence system. It was abandoned in the 4th century, when Roman legions withdrew from Pannonia.
Today there is a museum, which is part of the Bratislava City Museum.
Archaeologists have unearthed its remnants and their discoveries are on exhibition in the hall of the museum, which is open in summer and can be found behind the Catholic Church of St Mary Magdalene in the town.
Wikipedia https://en.wikipedia.org/wiki/Gerulata
Official Website https://www.citylife.sk/blog/anticka-gerulata-mmb-je-sucastou-unesco
Address 69/7 Gerulatská, Rusovce 85110, Slovakia
Coordinates 48°3'21.576" N 17°8'58.047" E