We really like Slovenia.
In Ptuj we were the only tourists visiting the museum (we wanted to see the carnival costumes and musical instrument collection, and it was very good.)
We were lucky to approach the enormous Pleterje Monastery from above (a road on a hill that is), which allowed us to see its size. At the monastery one can only visit the simple church (but I prefer churches to be simple) and it was made all the more memorable because, as we sat in the church, we could hear the monks singing.
Next door to the monastery is the 'Pleterje Open-Air Museum'. Here we were again the only tourists and so had a wonderful guided tour and learnt so much about a Slovenian way of life from years past.
Then we followed the Krka River: beautiful historic towns, and many castles, and lot of hay racks.
After doing all these things quite alone, we then found the bus loads of tourists at 'Postojna Cave'. These caves are wonderful, and big, and they handled their thousands of visitors very well and deserve all those tourists.
And then we checked out the castle built into the mouth of a cavern, 'Predjama Castle' (we just drove up and looked at the outside, but we're glad we did).
Then, keeping our Slovenian touring even more varied we visited the oldest planned breeding stud farm in the world: for Lipizzaner horses at Lipica.
At finally, we visited the historic salt pans (some still in use) on the Slovenia-Croatia Coast.
Slovenia is certainly an impressive country, but, the part where the monastery is can get to -15 degrees Celsius- that's way too cold for us!