Oncol Park was established to protect, preserve and celebrate the area's natural values. Wander through and look out for birds and other wildlife.
You'll have no end of sightseeing choices when staying in Valdivia. Oncol Park is a great place to kick off here, but there are lots of other worthwhile sights to consider. Parque Oncol, and Curiñanco Reserve are near the nature reserve and will round out your day nicely.