Best SellerSkip the Line: Medieval Tuida Fortress tours
One of the must-see and experience sights in Sliven

Explore one of Bulgaria's most strategically significant fortresses, perched on Hisarlaka Hill overlooking Sliven. This Late Roman and medieval stronghold spans centuries of history—from Byzantine defensive architecture to Bulgarian medieval construction—with skip-the-line access letting you maximize time exploring its layered past.
Тhe Tuida Fortress is a Late Roman, Early Byzantine, and medieval Bulgarian fortress located on the Hisarlaka Hill in the eastern Bulgarian city of Sliven. It's a must-see attraction offering plenty of activities inside. We welcome you!
Spring (April–May) and autumn (September–October) offer comfortable temperatures and clear visibility. Midday summer heat can be intense on the exposed hilltop.
Top-rated, great-value activities in Sliven