Kmz extension is related to Google Earth Placemark File. You can open kmz files with Sketchup or Google Earth softwares.

Google Earth is a software which provides close up displays of various cities of the world on map.  KMZ files include coordinate informations. Besides, 3D models which required for google Sketchup software are found in KMZ files. Normally, Sketchup files use .skp extension. 

Sketchup is 3D software that you can draw house and any architectural shape with it. To learn more, please take a look the following links.

What to use kmz

Sketchup, Google Earth

which page related to kmz file

kmz Related Searches

You can check related links about kmz fileextension.