1. Harvard University
Located in Cambridge, Massachusetts, in the United States, Harvard University was founded in 1636, making it the oldest university in the United States, and has more than 360,000 alumni worldwide. Its notable alumni include 32 heads of state, 48 Pulitzer Prize winners and 47 Nobel Laureates. The school has a long-standing reputation as one of the best universities in the world - it has been ranked #1 on Academic Ranking of World Universities (ARWU) from 2003-2015. Its degree programs are offered through 11 academic schools and the Radcliffe Institute for Advanced Study.
2. University of Oxford
The University of Oxford in Oxford, England, is the oldest university in the English-speaking world and has been listed among the top universities in the world for more than nine centuries. University of Oxford students represent more than 140 nationalities, and 94% of students secure a job or enroll in further study within six months of graduating.
3. California Institute of Technology
More commonly known as Caltech, the U.S.'s California Institute of Technology is a world-renowned research university with a reputation for intense academics. Globally known facilities on this campus include the Jet Propulsion Laboratory, Seismological Lab and International Observatory Network.