When I first saw the exotic Giant Pelican flower or Brazilian Dutchman's Pipe (also known as Aristolochia gigantea), I was awed by the beauty and its weirdness.
The vine looks delicate but can grow to heights. The leaves are heart-shaped, resembles the leaves of Tinospora cordifolia (Amruthaballi). I read that the flowers have a lemony fragrance; however, for me, the flower and the whole vine seemed weird.
I just couldn't coax myself to buy the vine; the flower had managed to scare me. :-)