Existing commercial Web browsers provide various utilities and functions, e.g., Web bookmarks and a browsing history list. Since the bookmark and history functions only the title and URL of the Web page, users who cannot remember the contents of each Web page have difficulty retracing their steps. In this paper, we propose a bookmark system based on a 3D interface. Additionally, our system offers three main functions; a 3D browsing history function, a marker function, and a look-ahead loading function. These functions enable users to browse Web pages more effectively. Categories and Subject Descriptors D.2.2 [Software Engineering]: Design Tools and Techniques-User interfaces; H.5.2 [User Interfaces]: [Graphical user interfaces (GUI)]; I.3.8 [Computer Graphics]: Applications General Terms Design Keywords 3D Technology, Web browser, Visualization