Here are some lovely modern indian wedding mandaps that would be a fantastic backdrop to any wedding ceremony.

I love the simplicity of this one.  Pairing this with heavy floral squared off arch display would make big impact.

Modern mandap 

Modern white 

Large modern

Here is a beautiful all white mandap.  This would be lovely for as a contrast to a bright multicolored reception.

This modern mandap would look great both indoors and outdoors.