Hello, I have started to make 16km x 16km terrain with different variant biomes. Just sharing the WIP. 

I made a concept of division of water area as well as different kind of terrains like snowy, hills, rocky etc.

Adding more details step by step and sharing the WIP, hope to make this final with high res. texture distribution.

Grid view for distribution of area and making zones for different biomes.

Few Filters and texture application.

Finally sharing with everyone the complete scene of varanasi. 

As per the demands of the clients have used too many human figures, animated flags, temples and many city buildings. 

Kindly let me know your inputs and suggestions. Unfortunately was not able to use high resolution textures for additional details, had to work on low quality and only diffuse due to the size of the scene.

Here is the basic complete scene model of the Banaras ghat with the buildings and temples.

Sharing few snaps of it before adding more detail assets and props in the scene.

 My current project work. Start to create Varanasi Ghat located India. for my upcoming VFX project.

Referance Pics

My basic model placement and scene making work. Well the idea is not to copy past as per the ref. pic but just to create the similar looking animation which resemblances the Banaras scenario. 

i Have started with revit to build the structure and stairs. and to place them with accurate scale and proportion.

Few of the screen shots i made in revit.