to Warsaw. According to the 1937 census, there were 70 habitable buildings. At the end of the 1930s there was a stormy development of villas, due to the climate and virtue of the landscape. Groszówka The name derives from the low price of the land - 20 kopecks (popularly 1 grosz) for 1 ell. Sandy, thickly wooded hills weren't the best conditions to colonize these areas. However, now most of the streets remain forested avenues. Grzybowa and Zielona Grzybowa in the 17th century was a small settlement whose development was determined by the route from Grochów to Stanisławów. Near this track there was a Zielona inn. According to the 1827 census, in Grzybowa there were only 3 houses and 12 inhabitants. Around the inn, the village of Zielona started to develop. In 1895 Zielona was a village in the Warsawian district, in the Okuniew municipality. Zielona's area was 245 morgas and it had 68 inhabitants. In 1795 Austria started to build a customs house there. It was a classical brick building destroyed in 1944. Grzybowa and Zielona were annexed to Wawer municipality. Currently there are beautiful estates located around the forests between the two parabolic dunes. On one of them is placed the Kamień Piłsudskiego (Piłsudski Stone), which commemorates the Polish Military Organisation's field exercises, which took place on April 29, 1917. Stara Miłosna Stara Miłosna is the oldest estate in Wesoła. Its documented history goes back to the 14th century. Stara Miłosna was the szlachta's village. Firstly, the name was Milosina, later Miłośnia, Miłośna and finally Miłosna. Through Miłosna runs a route, through which cattle was driven, and through which Warsaw was supplied. Many inns and 'mail' buildings were near the route. In the first half of 19th century, the owner of the majority of the area was prince Franciszek Ksawery Drucki-Lubecki, who was then chancellor of the exchequer. He had a palace there, which was destroyed during Battle of Olszynka Grochowska, in February 1831. After this, Miłosna was owned by the Rychłowski family. In the 19th and 20th centuries the Miłosna area got parcelled out. In the Słownik Geograficzny Królestwa Polskiego (English: Geographic Dictionary of Kingdom of Poland) it stated that in Miłosna was a few folwarks (Miłosna, Borków, Kaczydół and Żurawka), nomenclatures (Pohulanka, Janówek and Zakręt) and one village Zakręt. During World War I, in 1915, German Army took over Russian linear defence, which ran on Miłosna's