Self-guided Sightseeing Tour #1 in Halle (Westf.), Germany

Quercus rubra, the northern red oak, is an oak tree in the red oak group. It is a native of North America, in the eastern and central United States and southeast and south-central Canada. It has been introduced to small areas in Western Europe, where it can frequently be seen cultivated in gardens and parks. It prefers good soil that is slightly acidic. Often simply called red oak, northern red oak is so named to distinguish it from southern red oak (Q. falcata), also known as the Spanish oak. Northern red oak is sometimes called champion oak.

Wikipedia: Quercus rubra (EN)

Acer platanoides, commonly known as the Norway maple, is a species of maple native to eastern and central Europe and western Asia, from Spain east to Russia, north to southern Scandinavia and southeast to northern Iran. It was introduced to North America in the mid-1700s as a shade tree. It is a member of the family Sapindaceae.

Wikipedia: Acer platanoides (EN)

Ulmus glabra Hudson, the wych elm or Scots elm, has the widest range of the European elm species, from Ireland eastwards to the Ural Mountains, and from the Arctic Circle south to the mountains of the Peloponnese and Sicily, where the species reaches its southern limit in Europe; it is also found in Iran. A large deciduous tree, it is essentially a montane species, growing at elevations up to 1,500 m (4,900 ft), preferring sites with moist soils and high humidity. The tree can form pure forests in Scandinavia and occurs as far north as latitude 67°N at Beiarn Municipality in Norway. It has been successfully introduced as far north as Tromsø and Alta in northern Norway (70°N). It has also been successfully introduced to Narsarsuaq, near the southern tip of Greenland (61°N).

Wikipedia: Ulmus glabra (EN)

The Douglas fir is an evergreen conifer species in the pine family, Pinaceae. It is native to western North America and is also known as Douglas-fir, Douglas spruce, Oregon pine, and Columbian pine. There are three varieties: coast Douglas-fir, Rocky Mountain Douglas-fir and Mexican Douglas-fir.

Wikipedia: Douglas fir (EN)

Aesculus hippocastanum, the horse chestnut, is a species of flowering plant in the maple, soapberry and lychee family Sapindaceae. It is a large, deciduous, synoecious (hermaphroditic-flowered) tree. It is also called horse-chestnut, European horsechestnut, buckeye, and conker tree. It is not to be confused with the sweet chestnut or Spanish chestnut, Castanea sativa, which is a tree in another family, Fagaceae.

Wikipedia: Aesculus hippocastanum (EN)

Fagus sylvatica, the European beech or common beech, is a large, graceful deciduous tree in the beech family with smooth silvery-gray bark, large leaf area, and a short trunk with low branches.

Wikipedia: Fagus sylvatica (EN)

The Bird Cherry is a species of plant in the Rosaceae family. The name suffix avium is derived from the Latin word avis for bird and refers to the fruits that are often eaten by birds. But humans also like to eat the fruits of the bird cherry, especially those of cultivated forms.

Wikipedia: Vogel-Kirsche (DE)

Larix decidua, the European larch, is a species of larch native to the mountains of central Europe, in the Alps and Carpathian Mountains, with small disjunct lowland populations in northern Poland. Its life span has been confirmed to be close to 1000 years, with ages of around 2000 years likely.

Wikipedia: Larix decidua (EN)