Where do you buy large fabrics to frame for a large wall?

I have the dreaded open floor design in my house. My foyer/entry has a 15 ft wall. I was looking for a big wall art and fell in low with the Wabi Sabi art. My final intention is to have a big wall art and bench. This specific art will cost me $2000+ so I have decided buy the fabric and frame it myself. If you have any idea where I can buy this type of fabric or any other texture fabric, please let me know. Yall are stars