The Virgo detector will be a 3 km long interferometer antenna with a d
esign sensitivity aiming at the direct observation of gravitational wa
ves. The construction of this detector which will be installed near Pi
sa is under way. The data taking should start in year 2000 with a desi
gn sensitivity dose to (h) over tilde similar or equal to 10(-23) Hz(-
1/2). The motivations, detector principle, main sources of noise and s
tatus of the experiment are presented.