This document discusses the concept of 3D Internet. It begins by defining 3D Internet as a simulation of web pages in true-to-life graphics that allows for interaction. It then discusses why 3D Internet is useful, such as for interesting 3D shopping and distance learning. The document outlines the evolution from 2D Web 1.0 to more interactive 3D Web 3.0. It also describes some proposed technologies for implementing 3D Internet like VRML and using devices like Google Glass. Some applications mentioned include 3D e-commerce, training, games, and education. In conclusion, the document states that 3D Internet represents an opportunity to make the Internet more versatile and interactive, though research challenges remain.