Nepal is very rich in cultures and history where more than 40 different ethnic people are living. They have there own culture and mother tongue. Kathmandu Valley was settled by the Newar people from ancient time but now every one is settling here, so it is becoming very crowded. Though it is crowded, you can pend a week very easily just in Kathmandu visiting the Monkey Temple, Bauddhanath (Little Tibet), Great Hindu Temple Pashupati Nath, Kathmandu Darwar Square, Freak street, Patan Darwar Square, Bhaktapur Darwar Square, Tibetan Carpet Factory, Patan Handicraft industries, Buddhist Paintings (Thanka) at Bauddhan and of course shopping in Thamel for good bargains. You may go to Nagarkot which is about 15km. from Kathmandu city and you can see the sunrise or sunset and the panoramic mountain views. You can visit those places by yourself but if you want to know real stories about these places you may hire a professional tour guide for one or two days paying $20 to $30 for a day.