For a real showpiece, be ready to fork out a TON of money. Big cages are expensive, and they're even more expensive if they look really nice. However, a big jungle girl perched up high in a large, 6ft tall professionally built showpiece cage would be quite a sight.

I get my fix by converting 2ft tall exo terras into planted vivariums for young carpet pythons

If I was in the market for such a thing, the first place I'd look would be cages by design: cagesbydesign.com

You'll probably provide heating via basking lamps and such, so keeping room temps somewhat warm for a suitable ambient air temp will be a good idea, so if your living spaces gets as cold as my apartment does in winter, such a large cage (particularly such a tall cage) may not be best for your snake.