2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/229439We discuss VLTI AMBER and MIDI interferometry in addition to single-dish Subaru observations of massive young stellar objects. The observations probe linear size scales between 10 to 1000 AU for the average distance of our sources.2 pages, contributed talk to the ESO workshop "The Interferometric view on Hot Stars", March 2-6, 2009, Vina del Mar, ChileSolar and Stellar Astrophysicstext