ARCHIPELAGO is a parasitic system that reclaims underused airspace in dense cities. In Moscow’s business district, it spans the voids between thirteen towers with modular, suspended “islands” branching from a central core. Hosting gardens, lounges, co-working areas, and play zones, these elevated structures create new communal grounds above the city. By activating vertical voids instead of the ground plane, ARCHIPELAGO reframes the skyline as a shared urban commons.