Kalepark

thumb|300px|What remains today of the fortress. thumb|300px|Construction of the warehouse of the Genoese in Trebizond (Leonkastron). Fantastical fresco by Luca Cambiasi, painted around 1571. Palazzo Lercari-Parodi in Genoa.

Kalepark (originally called Leonkastron; and later Güzelhisar, meaning "Beautiful Castle" in Turkish) was procured and further fortified by Genoese merchants as a medieval fortress on the east side of Trabzon, Turkey. The fortress was built on a rocky outcrop strategically overlooking both harbors of the city: the summer harbor at a distance to the west, and the winter harbor just to the east of it. A few hundred meters to the west of Leonkastron lay the "Venetian Castle", which was a competing fortified trading outpost. In the following centuries many other Europeans settled on the streets between these forts - such as traders from Lviv in Ukraine - and it thus became known as the "European quarter".