Peru
The best way to get from Puno to Cusco is PeruRail's Titicaca Train. It's about a ten-and-a-half hour ride that winds through spectacular Andean scenery.
Slovenia
The crowning mountain range of Slovenia, the Julian Alps offer scenic views, mountain culture, hikes, WWI sites, and alpine villages. In the center is Mount Triglav, Slovenia's national symbol and tallest peak. You'll spend the day driving the 50 hairpin turns of the Vrsic Pass and back along the Soca River Valley. The whole drive takes about 4 hours, but to enjoy it well it will take the entire day.