Mount Everest stands 8,848 metres high at the border between Nepal and Tibet. An ascent is possible from both sides. The first ascent happened from the Nepal in 1953. It is the easier and more popular route.
Everest is not the technically most difficult mountain to climb, but the sheer altitude and weather make it a very difficult peak. Whoever wants to ascend Everest requires a great level of physical fitness and previous experience in climbing mountains.
The best time to attempt a peak climb is in May, when the weather is most likely to be calm. Another climbing period is in September/October, but during that time the weather is less reliable and more snow on the mountain make the ascent very difficult.