Neon Genesis Evangelion The N.E.R.V. Headquarters is contained within the massive underground structure known as the GeoFront. It was constructed in 2007 with the use of N2 Weaponry. With the help of a reflective interior surface and windows to let light from the surface in, the Geofront almost resembles the surface. The exception to this being the underside of Tokyo-3's retractable buildings hanging overhead. In case of emergency, the city blocks can slide downward where they are protected by several layers of metal. The N.E.R.V. Headquarters is mostly off limits to anyone besides N.E.R.V. Personnel.