Trsat (Italian: Tersatto, Latin: Tarsatica) is part of the city of Rijeka, Croatia. It has a historic castle or fortress in a strategic location and several historic churches. The Croatian noble Prince Vuk Krsto Frankopan is buried in one of the churches. Trsat is a steep hill, 138 m high, rising over the gorge of the Rječina river, about a kilometre away from the sea. It was strategically significant from the earliest times right up to the 17th century.