Kayseri Castle, 3rd century Roman castle in Kayseri, Turkey.
Kayseri Castle is a fortress in the center of Kayseri, Turkey, made up of an inner stronghold and an outer ring of defensive walls. Several towers are placed along the perimeter, giving the complex a solid and layered appearance from all sides.
The castle was first built during the Roman period and was expanded and modified under Byzantine, Danishmend, Seljuq, and Ottoman rule. Each period left visible changes in the walls, towers, and overall layout of the site.
A mosque from the 15th century stands inside the castle walls, showing how the structure was adapted for new uses over time. Walking through the complex, you can notice Ottoman architectural details placed alongside much older stonework.
The castle now houses an Archaeological Museum with exhibitions that are open year-round. It is worth setting aside enough time to see both the indoor collection and the outdoor structures at a relaxed pace.
A coin from the reign of Emperor Gordian III, minted in the 3rd century, shows an image of this fortress, making it one of the few sites recorded through ancient coins. This numismatic evidence is among the earliest known records of the location.
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