Kathmandu valley has long been the center of culture, trade and learning in Nepal. Kathmandu valley comprises the three cities Kathmandu, Patan and Bhaktapur. A short trek along the northern ridge of the valley offers a superb view of Ganesh Himal, Langtang and Gauri Shanker Himal as well as rewarding views over the foothills and a bird's eye view of the Kathmandu Valley.