Operated by Arianespace, the ELA-3 is at the Guiana Space Centre in French Guiana in Kourou. This was the launch site of the Ariane 5.
Guiana Space Centre | location | Kourou, French Guiana ELA-3 | site | Guiana Space Centre Ariane 5 | launch site | ELA-3 ELA-3 | operator | Arianespace