A three dimensional (3D) client application for web browsing is described. The 3D client is able to interpret 3D structure definitions and display 3D environments associated with various sets of websites. Each 3D environment is defined using a set of connecting grids. Each connecting grid defines spatial relationships among sets of websites associated with zones of the connecting grid. Each zone includes a set of 3D structures and is associated with a set of surrounding zones. As a user moves throughout the 3D environment, additional zones may be included in the 3D environment while some zones may be removed such that the user experiences a continuous expansive environment. A user is able to interact with multiple sets of websites included within the set of surrounding zones.