Found this vine growing in southeast Florida and thought it was fantastic. It’s a climbing vine with 4 inch wide flowers. The vine was at least 12 ft wide and the height of the fence.
It is Aristolochia, probably A. littoralis, an evergreen climbing plant. It does not tolerate cold conditions, but will grow well in a sheltered position in places where the temperature does not fall below 10-15deg. C. Further information here https://www.rhs.org.uk/Plants/1580/Aristolochia-littoralis/Details