Lookmarks are thumbnails of existing web pages that can be arranged within a 2.5-dimensional space, just like documents can be arranged on a normal desk. The Lookmark system offers the user the opportunity of taking individual web pages and structuring and managing them within a 2.5- dimensional space. The paper discusses relevant related work in the field of Information Visualization and Interaction, design issues and the implementation of Lookmark in Java and Java3D.