I am currently testing cartoserver, which is a webservice that provide webmapping services for campus buildings. You can also read the specifications Here is an example : The corresponding WMS query is http://cartoserver.epfl.ch/cgi-bin/cartoweb-wms-epfl?VERSION=1.1.0 &REQUEST=GetMap&LAYERS=fake_color,verdure,eau,amenagements,signalisation, parkings_contours,tsol_ligne,batiments_compl,batiments0,batiments1,batiments2, batiments3,batiments4,batiments5,batiments6,&BBOX=532560,152000,533660,153100 &WIDTH=300&HEIGHT=300&Format=PNG