VRML is the Virtual Reality Modeling Language, a standard method to display 3D interactive worlds and objects on the web. The most common way to display, show, browse, play, or view VRML files, models, or worlds (.wrl file extension) is with a free VRML plugin, also known as a browser, player, viewer, reader... One of them is Cortona plug-in
which is freeware. Cortona VRML Client works as a VRML plug-in for popular Internet browsers (Internet Explorer, Netscape Navigator, Mozilla, etc.) and office applications.
Here you can see a collection of VRML objects of Virtual Sarajevo.