Tropical Islands Resort is an artificial tropical resort in Brandenburg, Germany. It is said to be the world's largest tropical indoor pool which can accommodate up to 7,000 visitors a day. It is also the world's largest indoor waterpark at 66,000 m² (710,000 sq feet).

The resort is located in Briesen/Brand, part of Halbe in Dahme-Spreewald, Brandenburg, Germany, about 60 km (36 miles) southeast of Berlin, off the "Staakow" exit of the A13 Autobahn.

It resides inside a disused hangar 360 meters long, 210 meters wide and 107 meters high. At 5.5 million m³ (194 million ft³), it stands as one of the largest buildings on Earth by volume, and is the world's largest single hall without supporting pillars inside. The hangar cost €78 million and was originally commissioned by Cargolifter AG as an airship hangar named Aerium, but the airship it was intended to house – the CL160 – was never built.

M/F Polonia ferry of Unity Line in Świnoujście harbour (length: 170 m, beam: 28 m).

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Siemianówka - village in western Poland.

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Bukowno is a town in Olkusz County, Lesser Poland Voivodeship, Poland, with 10,765 inhabitants (2004).

[Source: Wikipedia]

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Student's Hostel no 3 and 4 in Bydgoszcz, Poland.

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II General Education Secondary School in Pulawy, Poland

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Eben-Emael was a Belgian fortress between Liège and Maastricht, near the Albert Canal, defending the Belgian-German border. Constructed in 1931-1935, it was reputed to be impregnable. But on 10 May 1940, 74 paratroopers of the German 7th Flieger later 1st Fallschirmjäger Division landed on the fortress with gliders (type DFS 230). One day later, they were reinforced by the German 151st Infantry Regiment. At 13:30 h on 11 May, the fortress surrendered. 1200 Belgian soldiers were captured.

Eben-Emael, a diamond-shaped fort, was Belgium's hope to defend the eastern side from invasion, charged with defending or destroying three key bridges. It also gave protection to the south what was called the Gap of Vise. A fortress to protect this approach to Liège had been conceived in the latter 19th century, but only became politically convincing after the Albert Canal was dug (to provide a route for Belgian river transport that did not require entering Dutch territory). Thus the fortress was only completed in 1935, being sited between the river and the canal that bypassed it. With its steel and concrete cupolas, Fort Eben-Emael was thought to be impenetrable.

Ostrów Lednicki is a castle in Poland built in mediaeval times on an island on Lake Lednica. The castle is thought to be the home of the first Kings of the Piast dynasty. Today the ruins are of archaeological significance.

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