High Energy Physics beyond the Large Hadron Collider

After the fascinating discovery of the Higgs boson in 2012 by the Large Hadron Collider, still many questions about the nature of microcosmos and the evolution of the early Universe remain unanswered. To address these questions the international physical community discusses building a new, much higher energy collider. One idea is to build a new 100 TeV hadron collider at CERN, the other – to build 500 GeV linear electron-positron collider in Japan. Both proposals are described in this paper.