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Denzlingen is a municipality in the district of Emmendingen, in Baden-Württemberg, Germany. It is situated 8 kilometres (5.0 mi) north of Freiburg.

Denzlingen station is a station in Denzlingen in Baden-Württemberg, Germany. It lies on the Rhine Valley Railway at the junction with the Elz Valley Railway (Elztalbahn), which runs to Elzach. It is served by trains operated by Deutsche Bahn (DB) and the Breisgau S-Bahn (BSB) and has a total of four platform tracks. DB designates it as a class 4 station.

Gundelfingen station is a railway station in Gundelfingen in Baden-Württemberg, Germany. It lies on the Mannheim–Karlsruhe–Basel railway (Rhine Valley Railway). The Freiburg bypass, which is reserved for freight traffic, branches off south of the station. It is served by Breisgau S-Bahn (BSB) and DB Regio trains and has two side platforms. DB designates it as a class 5 station.

The ruins of Zähringen castle is what remains of the ancestral seat of the Zähringer Alemannic noble family, located near Freiburg im Breisgau.The Zähringer became a powerful ducal dynasty in the area of what is now South Germany and Switzerland in the high medieval period and the founder of several cities, including Freiburg im Breisgau, Villingen, Neuenburg, Freiburg im Üechtland, Bern, Thun, Rheinfelden and Murten. The name Zähringen is mentioned for the first time in records dating back to the early 11th century. However, it is not clear without ambiguity whether they refer already to a fortification on the hilltop or to the village, the present day suburb of Freiburg.The first unambiguous mention of the castle is in the "Rotulus Sanpetrinus", a parchment roll issued in the nearby abbey of St, Peter, dated to 1128. That document was written in Latin and contains the passage "apud castrum Zaringen" (castrum is the Latin word for castle). The castle was the seat of Berthold II of Zähringen until 1091, when he moved out of this castle to Freiburg Castle on the Schlossberg of Freiburg. He had ordered the construction of that new castle, because he considered that location to be more advantageous both from commercial and strategical perspectives. The castle was besieged and taken in the context of the feud between Welf VI and Conrad III by the young Frederick Barbarossa in 1146. After the House of Zähringen died out in 1218, Emperor Frederick II confiscated Zähringen castle as imperial fief. Later, between 1275 and 1281, in the wake of controversies between the emperor and the counts of Urach regarding territorial possessions, the castle was destroyed and rebuilt. In 1422 the Margrave of Baden acquired a part of the compound. The castle was definitely destroyed during the German Peasants' War in 1525. In 1815 the castle hill became the property of the house of Baden and today the area belongs to the municipality of Gundelfingen. What is still intact is a large round tower that was built in the 13th century. It has an observation deck that is surrounded by merlons. On the castle hill there is also a restaurant which provides diners with a view of the valley. The area is accessible by car only from Zähringen following the Pochgasse.

Gundelfingen im Breisgau (Low Alemannic: Gundelfinge im Brisgau) is a municipality directly north of the city Freiburg in Baden-Württemberg in southern Germany. Gundelfingen is one of the larger municipalities in the Breisgau-Hochschwarzwald district. It consists of the old place Gundelfingen and the village Wildtal, which was included in the municipality in the 1970s.

The Roßkopf tower (actually Friedrichsturm or Frederick's tower after Frederick I, Grand Duke of Baden) is a 34.4 m (113 ft) high observation tower of steel frame structure commissioned and financed by the Schwarzwaldverein (Black Forest Club) and built by the Freiburg architect Philipp Anton Lazy in 1889 on the 737 m (2,418 ft) high Roßkopf near Freiburg between the Dreisam valley and the Glotter valley. It is one of the oldest steel lattice towers in Germany. Panoramic views of the Black Forest and the Rhine Valley can be seen from the observation platform above the treetops of the wooded hilltop, and in good visibility to the south until the Alps and the west the Kaiserstuhl and the Vosges.

Roßkopf (Breisgau) is a mountain of Baden-Württemberg, Germany. The 737 m (2,418 ft) high Rosskopf is a mountain in the Black Forest in the northeast of Freiburg and the southeast of Gundelfingen. It is on the edge of the territory of the city between the Glotter valley and the Dreisam valley. On the Roßkopf the borders of Gundelfingen, Freiburg and the formerly independent municipality Ebnet (today Freiburg-Ebnet) meet. Several border stones in the forest give evidence of the development of the municipal boundaries.

Zähringen is the northernmost suburb of Freiburg im Breisgau in Baden-Württemberg, Germany. Its population is 9,196 (2020).

St. Odile is a forest sanctuary in Freiburg's suburb Waldsee. It is located at a height of 480 m in a forest clearing in the upper St. Odile ravine in the municipal forest of Freiburg at the southern slope of the Roßkopf at a distance of approximately 750 m from St. Wendelin.

The Musbachtal is a small 2.6 km long steep and narrow carved valley with a creek at the bottom.

Herdern is a quarter (Stadtteil) of Freiburg im Breisgau in Baden-Württemberg, Germany.

Freiburg Botanical Garden (German: Botanischer Garten Freiburg or Botanischer Garten der Albert-Ludwigs-Universität Freiburg) is a botanical garden in the Herdern district at Schänzlestraße 1, Freiburg im Breisgau, Baden-Württemberg, Germany and is associated with the University of Freiburg as the "Forschungs- und Lehrgarten der Universität Freiburg" (Garden for research and teaching of the University of Freiburg) of the Faculty of Biology. The current director of the garden is Professor Dr. Thomas Speck.The garden was founded in 1620 by the University of Freiburg. A building on the same property was rebuilt as a hospital for members of the university, which also served for anatomy training. It was one of the first botanical gardens in Germany. The garden was originally part of the University of Freiburg Faculty of Medicine. The first director of the garden was Jacobus Walter (born 1655), a professor of medicine who was also responsible for botany. During the Thirty Years' War, the garden was destroyed.The garden was rebuilt in 1766, but was forced to relocate to make room for the fortifications built by the Marquis de Vauban to protect the city after Freiburg had been annexed by France in 1677. The botanic garden was laid out near the river Dreisam. Its design was heavily influenced by the onset of the Age of Enlightenment and by the increased interest in botany during the second half of the 18th century. Again part of the Faculty of Medicine, the garden measured approximately 6.6 acres (27,000 m2) in area. Despite damage from floods and the Napoleonic Wars, the garden included an impressive 3,000 plants by 1829, as well as greenhouses built in 1827 and 1828. Directors of the botanical garden from this period included Karl Julius Perleb, Fridolin Karl Leopold Spenner, Alexander Braun, Carl Wilhelm von Nägeli, Heinrich Anton de Bary and Julius von Sachs. In 1878 the garden at the Dreisam had to be abandoned, and the garden relocated to what is now the Institutsviertel (institutes quarter) and remained at this location until the First World War. In 1912 the garden moved to its current location in Herdern district of Freiburg, when a new institute for botany was built there. The garden sustained damage during World War II in the 1944 air raid on Freiburg. Today the garden contains some 8,000 species, with research centered upon Black Forest fossil flora of the Carboniferous period, and the functional morphology and biomechanics of living and fossil plants. Its collections include plants from alpine regions, dunes, heaths, marshes, and bogs, with four exhibition greenhouses (900 m²) containing tropical plants, ferns, and cacti and succulents.