Prehistoric pets/The reptile zoo in Anaheim, California had a great enclosure for twinkie, the huge albino reticulated python, she unfortunately passed away this year, but the enclosure is still being used for another large retic.
large snakes don't really lend themselves to being great display animals, because they don't move around all that much, and prefer to coil up hidden away from view all day, a good exhibit might be to have a large anaconda in an aquatic set-up where the water level extends part way up the viewing glass, enabling the visitor to see the snake underwater at it's level instead of just looking into a pool from above, I think it is the west midlands safari park that has a good anaconda enclosure like this. alligator bay in france also had some good large constrictor enclosures when i was there last.