3D virtual world formatted in VRML, the Virtual Reality Markup Language; contains 3D objects and scenery data; simulates what a real-life building or landscape looks like.
VRML Virtual World files typically have a .WRL extension.
Program(s) that open vrl files
Mac / Windows: IMSI TurboCAD
Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/vrl
