Really should go and see this part because it is a beautiful sight and there are some restaurants/bars right there, stick your feet in the water while sitting on a dock.
Couple of km west from Kanfanar, in the Lim valley lie the ruins of the medieval town Dvigrad (Two Castels). The names comes from two, close to eachother hills topped by two castels. The groundwork was made by Iliryans and in medieval times the castels were known as Moncastello and Parentino. Only Moncastello survived and developed further, but nevertheless, in the late medieval times it was known as the Dvigrad. Till 15th century it was under the rule of Aquilea, then came under the venetian rule.
In 1630 Dvograd was abandoned due to plague and the remaining inhabitants established the present town of Kanfanar. Dvigrad was left to fall to ruins and since then nothing chainged. You can explore the ruins, walk around on (once stone) streets and try to figure out what particular buildings were used to. There is a great chance that you will have the ruin just for you. There is no entrance fee. Just be careful. The ruins are not very stabil and stones can still fall on you.
taking a nice quiet walk through the woods, we looked for small asparagus and saw some nice flowers and the little streams and what not are very nice too.