In case of good weather, you can enjoy views at Oravska barrage and Western Tatras. The hike from Tvrdosin to the sightseeing tower is not so long, neither difficult.
During winter is this route popular for cross country skiers.
The route is approx. 3km long it goes through fields and grasslands. Sightseeing tower is in altitude 800m, which is not so high. But it is high enough to choose a peak that you will visit next. As you will see on your own, Tvrdosin and its surrounding offers many attractive touristic places.