tvrda Dubovac je utvrda iznad Karlovca
Utvrda Dubovac sagrađena je na brdu iznad Karlovca. Toranj četvrtast u tlocrtu sagrađen je najvjerojatnije još u 13. st. a u 15 st. je renoviran u renesansnom stilu. Vlasnici Utvrde tijekom povijesti bili su mnogi - od Slavonskog plemstvaobitelji Sudardo poznatih Frankopana i Zrinskih. Vlasnici Dubovca od 1671 do 1809 bili su razni Karlovački generali, a 1837 godine grof Laval Nugent obnovio je utvrdu u romaničkom stilu. Dubovac je još jednom obnovljen 1952 prema svom izgledu iz 18 st.
Utvrda je u bliskoj povijesti služilai kao hotel , a šteta učinjena pregradnjom interijera pokšava se u skorije vrijeme popraviti. U okviru utvrde nalaze se izložbeni prostori muzeja.

Dubovac Castle is a castle in Karlovac, Croatia.
The Dubovac Castle overlooks the Croatian city Karlovac. Square tower was probably built during the 13th century. In 15th century the castle is rebuilt in renaissance manner. The owners of the castle were various – from Slavonian nobleman family Sudar to famous Croatian counts and dukes Frankopan and Zrinski. From 1671 until 1809 the owners of Dubovac were the Karlovac generals. In 1837, a new owner, Count Laval Nugent, rebuilt the castle in the spirit of romanticism. Dubovac was once again renovated in 1952 in relation to graphics from the end of 18th century."
The castle was used for several years recently as a hotel, and the damage done to the interior to accommodate rooms, is now being repaired. There are museum exhibits and a large model of the countryside. Guide materials indicate that the fortress was built on a hill constructed by the people in order to maximize defenses and views of the surrounding areas.