Sisak Fortress
A bit south of the town center—3 km (2 miles) to be exact, where the rivers Kupa and Sava meet—stands the once-mighty Sisak Fortress (built 1544–50), with one prominent bastion at each point of its triangular form. The fortress has a hugely significant past: it was here, on June 22, 1593, that the Habsburgs, in the company of Croats and Slovenes, pulled off a victory over Ottoman armies, a triumph that figured prominently in halting the Ottoman advance toward Zagreb and into Western Europe. The fortress's interior is closed due to earthquake damage (no reopening date at the time of this writing), but it's worth taking a look at the structure and going for a stroll on the green walkway that surrounds it.
