Step back in time as you wander through the heart of ancient Zadar at the Roman Forum. This open-air square is scattered with impressive ruins that you can walk amongst freely, feeling the 2,000 years of history right under your feet. It's a wonderfully atmospheric spot, especially in the golden light of late afternoon, with the impressive St. Donatus Church right beside it and local life buzzing in the surrounding cafes. There's no entrance fee, so you can simply stroll through and soak it all in at your own pace.