Oder–Spree Canal

The Seddinsee is a lake in the south-eastern outskirts of Berlin, the capital city of Germany. The lake is aligned south-west to north-east, with its south-western end adjacent to the Berlin suburb of Schmöckwitz. Here the Seddinsee meets the Zeuthener See and Langer See, two lakes that form part of the course of the River Dahme. The Seddinsee is navigable. It has a length of about 2.9 kilometres (1.8 mi) and a width between 500 and 1,000 metres (1,600 and 3,300 ft). Several little islands are in the lake. Besides its natural connection to the River Dahme, the Oder-Spree Canal enters the lake on its eastern shore, whilst the Gosen Canal links the lake's northern end to the Dämeritzsee. Besides seeing considerable sightseeing and leisure traffic, the lake also forms a link in several commercial navigation routes, including the route from Berlin to Poland via the River Dahme and the Oder-Spree Canal.

Müggelheim (German pronunciation: [ˈmʏɡl̩ˌhaɪ̯m] (listen)) is a German locality (Ortsteil) within the Berlin borough (Bezirk) of Treptow-Köpenick. Until 2001 it was part of the former borough of Köpenick.

Gosen-Neu Zittau is a municipality in the Oder-Spree district, in Brandenburg, Germany. Neu Zittau is situated in the Spree valley, near the Oder-Spree-Canal.

The Zeuthener See (German pronunciation ) is a lake situated to the south-east of Berlin, the capital city of Germany, in the states of Berlin and Brandenburg. At an elevation of 34 metres (112 ft), its surface area is 2.33 square kilometres (0.90 sq mi).

Schmöckwitz (pronounced [ˈʃmœkvɪts] (listen)) is a German locality (Ortsteil) within the Berlin borough (Bezirk) of Treptow-Köpenick. Until 2001 it was part of the former borough of Köpenick.

The Gosen Canal (German: Gosener Kanal) is a canal in the eastern suburbs of Berlin, the capital city of Germany. It takes its name from the village Gosen, at the southern end of the canal. It is 4 kilometres (2.5 mi) in length and links the Dämeritzsee and Seddinsee lakes. The Dämeritzsee and Seddinsee are both navigable, with the Seddinsee providing a link to the River Dahme and the Oder-Spree Canal, and the Dämeritzsee providing a link to the Müggelspree reach of the River Spree and to the Flakensee.Although the plan for the Gosen Canal goes back to 1872, construction did not start until 1933, and the canal opened in 1936. The principal reason for the construction was to provide an alternative route for commercial shipping between Berlin (via the Dämeritzsee) and the Oder-Spree Canal (via the Seddinsee) during the 1936 Summer Olympics, when the more normal route via the Langer See was closed in order to use the regatta course at Grünau for the Olympic canoeing and rowing events. Another explanation is that the canal was built to bring the coal from Königs Wusterhausen to the Klingenberg power station in Berlin-Rummelsburg.The canal is navigable by boats with a draught of up to 2 metres (6 ft 7 in). It has no locks, but is crossed by a single bridge (which is planned to be rebuilt by 2022), with a maximum clearance of 4.3 metres (14 ft). Small craft are also able to navigate between the two lakes using the roughly parallel Gosener Graben.Besides seeing considerable sightseeing and leisure traffic, the canal today also forms a link in a commercial navigation route from the limestone workings at Rüdersdorf, which reaches the Flakensee by a lock at Woltersdorf.

The Berlin-Müggelberge TV tower is the 31 metre tall base of a tower, never completed, in the Müggel hills of southeast Berlin, Germany. The tower base is currently used as radio relay link station. The tower was originally planned as the TV tower for Berlin. It was to have a total height of 425 feet (130 meters) with an observation platform at 230 feet (70 meters). After construction was started in 1954, a survey indicated that the tower would endanger aircraft on approach to the Berlin-Schoenefeld airport. For this reason, on 13 December 1955 construction was stopped. The tower base was later used by the East German Ministry for State Security (Ministerium für Staatssicherheit or Stasi) as a listening post. Today it serves the Deutsche Telekom AG as radio relay link station and has a radar dome on its top. Close to the tower, there is a 64 metre tall lattice tower with aerials for non-public mobile radio services and directional antennas. The Berlin-Müggelberge TV tower is not accessible to the public and is not to be confused with the Berlin-Müggelberge look-out, known as the Müggelturm (Müggel tower), which is publicly accessible.

The Langer See is a lake situated in the south-eastern outskirts of Berlin, the capital city of Germany. The lake is aligned south-east to north-west and forms part of the course of the River Dahme. The Langer See is approximately 11 kilometres (6.8 mi) long, with an average width of 221 metres (725 ft) and an area of 2.43 square kilometres (0.94 sq mi). The Dahme flows into the Langer See from the Zeuthener See, at the south-east end of the lake by the Berlin suburb of Schmöckwitz. It flows out to the north-west near Köpenick and its confluence with the River Spree. At Schmöckwitz the Langer See also mingles with the Seddinsee. Like the River Dahme, the Langer See is navigable. Besides traffic to the upstream reaches of the Dahme, the lake also carries traffic to the Oder-Spree Canal, which links with the Seddinsee and provides a commercial waterway link between Berlin and Poland.The Langer See is crossed by two of Berlin's passenger ferries that are operated by the BVG, the municipal transport operator. The F12 crosses from Müggelbergallee (in Köpenick) to Wassersportallee (in Grünau), and operates all year. The F21 crosses from Krampenburg via Große Krampe (both in Müggelheim) to Zum Seeblick (in Schmöckwitz), and operates only in summer.The regatta course on the Langer See at Grünau was used for the Olympic canoeing and rowing events at the 1936 Summer Olympics.

The Müggelberge (also formerly called the Müggelsberge) are a wooded line of hills with heights up to 114.7 m above sea level (NHN) in the southeast of Berlin's Treptow-Köpenick quarter. They are dominated by the Kleiner Müggelberg (88.3 m) and Großer Müggelberg (114.7 m). The Müggelberge cover an area of around seven square kilometres. The ridge was formed during the ice age. A viewing tower called the Müggelturm has been erected on the hills with a view of the Müggelsee and the Berlin-Müggelberge TV Tower.

Zeuthen is a municipality in the district of Dahme-Spreewald in Brandenburg in Germany.

Eichwalde is a municipality of the Dahme-Spreewald district in Brandenburg, Germany, situated at the southeastern Berlin city limits. With 2.8 km² (1.1 sq mi) it is the smallest Brandenburg municipality by area, while its population density is the second highest (after Glienicke/Nordbahn).

Rahnsdorf (German pronunciation: [ˈʁaːnsˌdɔʁf] (listen)) is a locality (Ortsteil) of Berlin, Germany, located in the southeast of the Berlin borough (Bezirk) of Treptow-Köpenick. Until 2001 it was part of the former borough of Köpenick.