Virgo is a 3-kilometer detector located near Pisa, Italy. The VIRGO funding agencies, namely the CNRS in France and INFN in Italy have established the EGO consortium to develop VIRGO and to promote European collaboration in gravitational
TAMA is a 300-meter detector located in Mitaka, Japan. The LCGT project is an advanced kilometre scale interferometric detector planned to be built in the Kamioka mines in Japan.
AIGO in Perth, Australia, is a 80 metre prototype for developing advanced interferometric techniques. ACIGA is an Australian consortium for developing a gravitational wave observatory in the southern hemisphere.