fighters, forming the shape of three clenched fists. The place where 10,000 civilian hostages from Niš and south Serbia were brutally murdered by German Nazis. Kalča, City passage and Gorča – Trade centers situated in Milana Obrenovića Street. Memorial Chapel in the memory of NATO bombing victims – The chapel was built by local authorities while the monument was built by the State government in 1999. They are situated in Sumatovacka street near Niš Fortress. Niš Fortress – The remaining fortification was built by the Turks, and dates from the first decades of the 18th century (1719–23). It is situated in the city center. The fortress-cafes – They are situated near Stambol gate (the main gate of the fortress). Mediana – Archeological site, an Imperial villa, from the late Roman period on the road leading to Sofia, Bulgaria, near EI Nis. Niška Banja (Niš spa) – A very popular spa during the summer season. It is from city center on the road leading to Sofia, in the bottom of Suva Planina Mountain. Tinkers Alley – An old urban downtown zone in today's Kopitareva Street, built in the first half of the 18th century. It was a street full of tinkers and other craftsmen, but today it is packed with cafes and restaurants. Skull Tower (Ćele Kula) – A monument to the Serbian revolutionaries (1804–13); a tower made out of skulls of Serbian uprisers, killed and decapitated by the Ottomans. It is situated on Zoran Đinđić Boulevard, on the old Constantinople road leading to Sofia. Sultans Trail Long distance hiking and biking route from Vienna to İstanbul runs through Niš. Architecture and monuments Buildings in Niš are constantly being built. Niš is the second city in Serbia after Belgrade by number of high-rises. The Ambassador Hotel is one of the tallest buildings in Niš, but there are also other buildings like TV5 Tower. Sport The city of Niš is home to numerous sport clubs including Radnički Niš, RK Železničar 1949, Mašinac, ŽRK Naisa, OK Niš, Mašinac, Sinđelić Niš etc. The biggest stadium in Niš is the Stadion Čair, with a total seating-capacity of 18,151 after renovations. The stadium is part of the Čair Sports Complex that also includes an indoor swimming pool and an indoor arena. Niš was one of four towns which hosting the 2012 European Men's Handball Championship. Notable residents The people listed below were born in, residents of,