Kabaoglu Ancient Aqueduct

Known as Nicomedia in ancient times, Izmit was the capital of the Bithynia region and held strategic importance during the Roman Empire. The Kabaoglu Ancient Aqueduct was built in the 2nd century AD during the reign of Emperor Trajan to meet the water needs of this city. The structure, which has survived with a length of approximately 50 meters and a height of 15 meters, stands as one of the most prominent evidences of Roman engineering in the Kocaeli geography.

The aqueduct is considered not only as a water transport infrastructure but also as a holistic historical site with the rock-carved structures around it. There are chapels carved into rocks, multi-story rock chambers, and interconnected passages in the area; this indicates that the area was inhabited during different periods.

Since access to the area requires a walking trail, spring (March–May) and autumn (September–November) are the most favorable periods. During these seasons, temperatures are mild, and the vegetation makes the trail more enjoyable. In summer, especially during midday, high temperatures and humidity can be challenging; if you plan to go during this period, prefer the morning hours. In winter, the soil can become slippery in rainy weather.

The Kabaoglu Ancient Aqueduct is located within the borders of Izmit district, in the Üçtepeler area. Those coming by car can reach Kabaoğlu neighborhood and park at a nearby point. From there, an approximately 2.1 km, moderately difficult walking trail leads to the aqueduct. The maximum altitude of the trail is 243 meters, with a total elevation gain of 96 meters. For those preferring public transport, you can learn about Izmit city line information from the Kocaeli Metropolitan Municipality transport unit.

Exploring not only the aqueduct but also the surrounding rock-carved chapels, multi-story rock chambers, and interconnected passages ensures you get the most out of the area. After completing the trail, you can return to Izmit city center to explore other historical traces of Nicomedia. For those who want to see the historical texture of Kocaeli more comprehensively, the Izmit Archaeology and Ethnography Museum and Pertev Pasha Mosque are also among the places that can be visited on the same day.

The two-story facade of the aqueduct offers a good frame for wide-angle shots. Before noon, as the sun comes from the east, the stone texture on the aqueduct surface appears more distinct. The entrances of the rock-carved chapels are interesting spots for compositions that create a sense of depth in narrow spaces. General plan photos of the aqueduct with its surroundings can also be taken from various elevations along the trail.

Since the area is in open terrain, comfortable and sturdy walking shoes are essential. The trail is considered moderately difficult; the terrain may be challenging for small children or those with mobility limitations. There are no sales points or facilities in the vicinity, so bring sufficient water and snacks. Be careful when entering rock-carved areas; some passages are narrow and have uneven ground. Avoid climbing on historical structures.

Entrance to the Kabaoglu Ancient Aqueduct is free. No expenses are foreseen other than vehicle fuel or public transport fees. There are many options in Izmit city center to meet your food and drink needs before and after your visit.