This Web site presents the three main research activities currently being pursued in high energy physics by CERN at the University of Wisconsin-Madison: ATLAS, BABAR, and ALEPH. First, visitors will find a short account of ATLAS. This is followed by a description of the activities the ATLAS group has been involved with including: R&D in the High-Level trigger system and R&D and construction of the Silicon tracking Detector. Physicists can learn how CERN is contributing to the BaBar experiment goal of studying millions of B mesons by assisting in the development of the Vertix Tracker (SVT). Lastly, scientists can learn about the results the ALEPH produced with the data collected at LEP I and LEP II.