The LEP2 and LHC projects at CERN

The LEP energy upgrade project (LEP2) which is based on the addition of superconducting cavities will raise the energy of the machine above the W pair production threshold. The planning of the approved phases with the expected energy and luminosity levels as well as the current status of the project are presented. The Large Hadron Collider (LHC) whose construction has been approved by the CERN Council in December 94, will provide proton-proton collisions with a center of mass energy of 14 TeV as well as heavy ion collisions with a center of mass energy in excess of 1000 TeV. An overview of the performance, technological challenges and present status of the project is given.