Arboretum Freiburg-Günterstal, Arboretum in Günterstal district, Freiburg im Breisgau, Germany.

The Arboretum Freiburg-Günterstal is a large collection of trees and shrubs in a forest area on the outskirts of the city. It brings together species from many countries and displays a wide range of different shapes and sizes of woody plants.

Trees from overseas were first planted in the late 1800s to test how well they could grow in the local climate. In the following years, organized test plots developed, which became the foundation for what exists today.

The name comes from the valley where it is situated, and the place developed as a space to test new forestry approaches. Today this practical focus remains visible in how trees are organized and labeled, helping visitors understand the variety of species that exist around the world.

The grounds rise from about 290 to 430 metres above sea level, so the paths climb and descend through sloped forest terrain. Two circular routes, the Wonnhalderundweg and the Sternwaldrundweg, each about 2 km long, are signposted with identification panels. The North American trees path in the Sternwald is also suitable for wheelchair users.

The tallest officially measured tree in Germany, a Douglas fir named Waldtraut vom Mühlwald, stands somewhat south of the arboretum proper, not within its bounds. The arboretum itself holds Germany's largest living collection of fir species, the Abietum, including many threatened with extinction.