Archaeologists restoring the grounds of Rusovce Chateau, a striking neo-Gothic landmark in Bratislava, Slovakia in central Europe, have uncovered a Roman aqueduct that was hidden beneath the surface of the earth for nearly two millennia. This remarkable discovery provides fresh insights into the region’s deep historical roots and has been hailed as an unprecedented find in Slovakia’s archaeological record.
The excavation, led by Trnava University’s Department of Classical Archaeology under the direction of Associate Professor Erik Hrnčiarik, was initiated as part of the ongoing restoration of the national cultural monument. While the team also unearthed a medieval brick kiln and a modern-era ice house, the most extraordinary find was the Roman aqueduct, an engineering marvel of a type never before found in Slovakia.
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Roman Engineering Brilliance on Display
The aqueduct, buried just 31 inches (80 cm) beneath the surface of the earth, is constructed from stone and features a base lined with Roman bricks (tegulae). These bricks were meticulously arranged to create a gradual slope directing water towards an as-yet unidentified structure. The aqueduct measures 36 inches (91 cm) in height and 13 inches (32 cm) in width, precisely one Roman foot.
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A view of the Roman aqueduct. (Trnava University/Facebook )
“We have documented 38 meters (125 ft) of the aqueduct so far, and its preservation is extraordinary,” said Hrnčiarik, in an interview published in the Slovak Spectator.
The scale of the construction is impressive. Archaeologists estimate that its builders used over 51 tons of stone and more than 80 Roman bricks. Some of these tegulae bear stamped manufacturer names, while others feature the paw prints of animals that stepped on them while they dried in the sun. One particular brick carries the inscription C VAL CONST KAR, linking it to the private brickworks of Gaius Valerius Constans of Carnuntum (modern Austria), active during the second century AD. Researchers believe the aqueduct was in use until the late 2nd century, at which point it was buried, preserving it for over 1,800 years.
Dog footprint on a tile at the bottom of the Roman aqueduct. (Trnava University/Facebook)
At the time of its construction, present-day Slovakia was part of the Roman province of Pannonia Superior, a subdivision of Pannonia created in 103 AD. The Romans established and maintained settlements along the Danube, with major centers such as Carnuntum and Brigetio playing key roles in regional defense and trade.
An ancient Roman tile with the inscription C VAL CONST KAR markings on it. (Trnava University/Facebook)
Rusovce itself was home to Gerulata, a Roman military fort housing an auxiliary cavalry unit of approximately 300 soldiers. The fort was surrounded by a civilian settlement (vicus) and several villa rustica farms. Roman-era remains have also been found in other parts of Bratislava (Slovakia’s capital) including Stupava, Devín Castle, Bratislava Castle Hill, and the Dúbravka district.
The Romans held on in central Europe until ceding the territory to the powerful Hunnic Empire in the fifth century. Roman ruins have been found in Slovakia quite frequently, but the new discovery is the first time an aqueduct has been unearthed.
What Was the Aqueduct’s Purpose?
The function of the aqueduct remains uncertain. Its path suggests it may lead to a hidden structure beneath the southern wing of Rusovce Chateau, possibly a Roman bathhouse. If this theory holds true, the aqueduct may have served Roman soldiers stationed at Gerulata, akin to the bath complexes found in Vindobona (modern Vienna). However, much of the original structure has been lost to later construction, leaving its exact role a mystery.
Given the site’s status as a protected heritage zone near UNESCO-listed buildings, Slovak authorities have decided to leave the aqueduct undisturbed. Plans for a new technical service building have been relocated to ensure the aqueduct remains preserved in its original setting.
Some of the most remarkable discoveries include luxury Roman ceramics (Terra Sigillata). (Trnava University/Facebook)
A Tapestry of Historical Eras
Beyond the Roman discoveries, the excavation has revealed evidence of settlements from multiple historical periods, spanning from the Early Iron Age to the Middle Ages. Among the most fascinating finds are luxury Roman ceramics (Terra Sigillata) imported from France and Germany, glass window panes, a vaulted roof fragment, a silver bracelet, and even an ancient wallet.
A Roman wallet among the finds. (Trnava University/Facebook)
A medieval brick kiln, which was later repurposed for lime production, further illustrates how successive generations reused Roman materials. “We believe the kiln was used to process marble statues and reliefs from the abandoned Roman camp nearby,” said excavation deputy head Tomáš Kolon.
Another intriguing discovery was an underground ice house, several meters in diameter, dating to the modern era. Such structures were used to store ice collected in winter for summer food preservation. This particular ice house likely belonged to the aristocratic Zichy family, who owned Rusovce Chateau in the 19th century.
Future Excavations
Excavations continue at the chateau, with archaeologists now shifting their focus to the former servants’ quarters within the expansive estate park. Once this phase is completed, they plan to return to the main chateau building in the spring, hoping to uncover more hidden secrets beneath Resolve’s storied grounds.
Meanwhile, restoration work on the chateau itself is ongoing. Launched last year, the extensive conservation project is expected to be completed by 2029. The initiative aims to restore and safeguard Rusovce Chateau as a cultural and historical treasure for future generations.
Top image: Archaeologists dug up the grounds of Rusovce Chateau and uncovered a Roman aqueduct, preserved for 1,800 years.
Source: Trnava University/Facebook
