Datun Nature Park sits in the volcanic hills north of Taipei and is a useful, low-effort way into Yangmingshan's wilder scenery. The park has ponds, grassland, forest edges, and paths with views toward the Datun peaks.
It is popular with local walkers rather than built as a big-ticket attraction, which is part of the appeal. Come for a short hike, cooler air, and a break from the city without committing to a full mountain day.