The new operational headquarters of the IAAF are situated at 6-8, Quai Antoine 1er, which is on Monaco's main port of Herculis.
For the first time since the IAAF first moved to Monaco in 1994, the IAAF has been able to gather the IAAF General Secretariat and seven other IAAF Departments: Broadcasting, Communications, Competitions, Development and Member Relations, Finance and Administration, Medical and Anti-Doping, and Technology and Information under the same roof.
An article with full details of the inaugeration can be read here (including a French translation).