The sports complex Tenis Club Sen of Mamaia extended in 2003 by building a tennis court with stalls for 200 persons and annexes: lockers, fast-food. În 2005-2006 the complex, which now is named Tenis Club Idu, extended even more by building a Central Court with stalls for 1700 persons, a tennis hall and more annex buildings for restaurants, fitness, conference room, lockers, offices. Authors: arch. Mihai Isacov, arch. Alinta Isacov. Structural engineer: eng. Lucian Rãdulescu.