The Darbar Square of Bhaktapur is one of the seven World Heritage Sites (UNESCO Monument Zone) of the Kathmandu Valley. It includes the Royal Palace and the Nyatapola Square.
Map from Michael Hutt, Nepal – A Guide to the Art and Architecture of the Kathmandu Valley, Boston 1995
Map from http://whc.unesco.org/en/list/121/documents
Foto by N.N. in http://www.digitalarchaeologyfoundation.com/historical-photographs-of-bhaktapur/
You´ll find Overview Maps of all seven World Heritage Sites in http://whc.unesco.org/en/list/121/multiple=1&unique_number=1448