Stick Insect/Phasmid - Phobaeticus magnus

Female Phasmid of the species Phobaeticus magnus. They are very long, with body length around 25 cm, but with their front legs extended, they can be up to 40 cm in total length.

Saw this at a friend's Butterfly House, they also keep other insects for display.
The species originates from Indo-China.