This document summarizes a seminar on 3D Internet presented by Pavan Gajanan Nagre. It introduces 3D Internet as using 3D graphics delivered over the web, allowing for more interactive experiences like shopping and gaming. The document explains that 3D Internet works through virtual platforms like Second Life and using technologies like virtual reality headsets, sensors, and artificial intelligence. It describes the architecture of 3D Internet including world servers, avatar/ID servers, and universe location servers. Some applications and advantages are more interactive experiences while disadvantages include limitations of traditional media. The conclusion states 3D Internet provides highly motivated audiences and is an evolution of the interactive internet, though research challenges remain.