Tremmen

The Nauen Plateau (German: Nauener Platte) is a low plateau in the German states of Brandenburg and Berlin. It rises above the surrounding countryside by an average of 15 metres (49 ft) and is a largely contiguous upland area that was formed during the Saale and Weichselian glaciations. It consists predominantly of ground moraine deposits, partly overlain by gently rolling end moraine formations. Whilst the neighbouring regions of Zauche to the south, the Teltow to the southeast and the Barnim to the northeast have the same name as their geological formation, the cultural landscape on the Nauen Plateau bears the historical and regional name of Havelland. That said, the river country of the Havelland extends beyond the plateau to include the Havel valley and other lowland areas.

Ketzin (German: [kɛˈt͡siːn] (listen), official name: Ketzin/Havel) is a town in the Havelland district, in Brandenburg, Germany. It is situated on the river Havel, 17 km northwest of Potsdam, and 40 km west of Berlin.

Geographically, the Havelland is the region around which the River Havel flows in a U-shape between Oranienburg to the northeast and Rhinow to the northwest. The northern boundary of the Havelland is formed by the River Rhin and the Rhin Canal. In the history of Brandenburg, the Havelland represents a historic region. In the heart of the Havelland is the county of the same name. In addition the Havelland includes the south of Ruppin Land with the Rhinluch, the western part of Berlin's Spandau, parts of Potsdam, the town of Brandenburg an der Havel and several villages in the county of Potsdam-Mittelmark. The Tourist Association of Havelland has chosen a rather different boundary. It covers the county of Havelland, the town of Brandenburg an der Havel and the northern part of the county of Potsdam-Mittelmark, including communities south of the Havel river, that belong to the region of Zauche. The writer Theodor Fontane described the Havelland as well as the other landscapes of Brandenburg. In the ballad Herr von Ribbeck auf Ribbeck im Havelland he helped to give this region special prominence and his novel character Effi Briest grew up here. The Havelland was also given its own volume of Fontane's accounts of hiking across Brandenburg, the Wanderungen durch die Mark Brandenburg.

The Ketzin Cable Ferry is a vehicular cable ferry that crosses the River Havel between Ketzin and Schmergow, both located in Brandenburg, Germany.

Paretz is a village in the German state of Brandenburg in the district of Havelland, west of Berlin. Recently, a district reform made Paretz into a borough of the city of Ketzin. It has a population of approximately 400. In the late 18th and early 19th centuries the village was the summer residence King Frederick William III of Prussia and of his wife Queen Louise.

Nauen is a small town in the Havelland district, in Brandenburg, Germany. It is chiefly known for Nauen Transmitter Station, the world's oldest preserved radio transmitting installation.

Päwesin is a municipality in the Potsdam-Mittelmark district, in Brandenburg, Germany.

Roskow is a municipality in the Potsdam-Mittelmark district, in Brandenburg, Germany.

2024 BX1, previously known under its temporary designation Sar2736, was a 44 centimetre-sized (17 inches) asteroid or meteoroid that entered Earth's atmosphere on 21 January 2024 00:33 UTC and disintegrated as a meteor over Berlin. It was discovered less than three hours before impact by Hungarian astronomer Krisztián Sárneczky at Konkoly Observatory's Piszkéstető Station in the Mátra Mountains, Hungary. It was observed with the 60 cm Schmidt Telescope. Sárneczky first thought it was a known asteroid because it had a brightness of 18th magnitude, but he could not find it in any catalog, so he reported it to the Minor Planet Center. The fireball was observed by the cameras of the AllSky7 and Fripon networks. 2024 BX1 is the eighth asteroid discovered before impacting Earth, and is Sárneczky's third discovery of an impacting asteroid. Before it impacted, 2024 BX1 was a near-Earth asteroid on an Earth-crossing Apollo-type orbit. The bolide was studied in June 2024. It had a steep entry of 75.6° and an entry speed of 15.20 km/s. The bolide was observed with the SDAFO at Tautenburg, which took a spectrum of the bolide. The spectrum was low in iron, consistent with an enstatite-rich body (E-type asteroid). At a hight of 55 km the meteoroid fragmented into smaller pieces. These primary pieces then broke up again at a height of 39-29 km. The size and mass were first estimated at 1 meter and 1700 kg based on albedos of S-type asteroids. The radiometric measurements from the European Fireball Network did however suggest a mass of about 100 kg. Considering it was an E-type asteroid, which have higher albedos, the new estimates are 0.44 meters and 140 kg.

Nauen station (German: Bahnhof Nauen) is a railway station located in the town of Nauen, Brandenburg, Germany. The station lies on the Berlin–Hamburg railway and the train services are operated by Deutsche Bahn and Ostdeutsche Eisenbahn.

The Sacrow–Paretz Canal, or Sacrow-Paretzer-Kanal in German (pronounced [ˈzakʁoː ˈpaːʁɛt͡sɐ kaˈnaːl] (listen)), is a canal in the northeastern German state of Brandenburg. It provides a short cut for vessels navigating the River Havel, linking the Jungfernsee, near Potsdam, with Paretz. Building of the canal began in 1874, and it was opened in 1876. Since then, it has been widened and deepened twice, once between 1888 and 1890, and again in the 1920s. Unlike the Havel Canal, which also provides a short cut for the River Havel, and also has its downstream end at Paretz, both ends of the Sacrow–Paretz Canal are downstream of Berlin. The canal is 12.5 kilometres (7.8 mi) long, of which 7.5 kilometres (4.7 mi) comprises artificially cut channel, whilst the rest is accounted for by several lakes. Besides the Jungfernsee, these include the Weißer See, the Fahrlander See and the Schlänitzsee. The canal has no locks, and is crossed by four bridges.

Groß Kreutz station is a railway station in the municipality of Groß Kreutz, located in the Potsdam-Mittelmark district in Brandenburg, Germany.