Nepal come in via the Tribhuvan International Airport in Kathmandu. It is in Kathmandu that trekkers need to acquire their permits and other documentation, either from a trekking Company or from the appropriate offices. These documents will be checked along the trekking route. For those with little time to spend in Nepal there are half-day hike from Kathmandu to witness breathtaking Himalayan views otherwise trek for weeks over stunning challenging mountain passes. Trekking in Nepal today is completely different to that of the 1960's. In all the main trekking areas, the National Parks and Conservation Areas lodges have been established where trekkers can find accommodation, food and meet other trekkers and locals along the way. The majority of the trails is well maintained and in many cases is sign-posted.