If you'd like some outdoor fun, make a day trip to Silvretta-Hochalpenstraße. No walk around the block, this hike is great for some mid-vacation exercise.
This steep landmass is located in Austria, a place that has so much on offer! Europatreppe 4000, Alpinarium Galtuer, and Versettla Gondola are other good sightseeing options nearby when you've had your fill of Silvretta-Hochalpenstraße.