I had the pleasure of being a client of Asian Trekking this year on a Makalu expedition. The staff at AT is very professional and qualified. hey get high marks for the way they treat there clients and for the way they handle the details.
The city of Kathmandu is named after a structure in Durbar Square called Kasthamandap. In Sanskrit, Kastha (?????) is "wood" and Mandap (????/?????) is "covered shelter." This unique temple, also known as Maru Sthal, was built in 1596 by King Laxmi Narsingh Malla. The entire structure contains no iron nails or supports and is made entirely from wood. Legend has it that the timber used for this two-story pagoda was obtained from a single tree.
Kathmandu is sometimes also called "Kantipur". "Kanti" is an alternate name of the Goddess Lakshmi, and "pur" means the place where such a goddess resides. Thus, the name Kantipur demonstrates the ancient belief that it is the place where Lakshmi dwells.
"Yen" is its original name, which was given to it before introduction of Sanskritized culture, by the indigenous people, the Newars. Meaning and significance of it is still unknown and under debate. The locals, in their day-to-day life still call their city name as Yen. And thus the Nepalbhasha version of the name of the metropolis is Yen Mahanagarpalika.