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Besides hiking and trekking in Nepal, what other things can I do and see in Nepal?
Nepal is known as a non-stop festival country. So it is use to be said that Nepal is a land of festivals. Almost everyday is day of festival in at least some parts of the country. Though most of them are of religious nature, they are almost always of joyous. Kathmandu Valley, with its rich Newar heritage is the most colorful place in the country. But other parts of the country also have their own fanfare. Check out the "Nepali Calendar" for details on the major festivals that will occur during your visit. Cultural Shows in Kathmandu and Pokhara also provide you with some entertainment, though they are far from being the real thing. Check out the posters in various restaurants and other public places in the tourist quarters of Kathmandu and Pokhara to find out what is going on.

About the existence of nightlife in Nepal, there are many night bars and couple of nightclubs, which stay open till late night in Kathmandu. If you want to gamble a little and have some fun, then you can drop into casinos at all five star hotels in Kathmandu.