The first post-Hawkins life-sized Iguanodon statue was one of animal collector Carl Hagenbeck’s prehistoric menagerie displayed at Tiergarten at Stellingen, near Hamberg, Germany. This statue (ca. 1910) — and other dinosaur figures — can still be seen today. And although not Iguanodon, here’s a rare 3D view of Diplodocus, another full-scale dinosaur figure included in the display, seen in this ca. 1910 Keystone View Company stereograph. 
Below are various other Iguanodon full-scale statues, as seen in souvenir postcards.
Dinosaur World, Erias Park, Colwyn Bay, North Wales.
Dinosaur Land, between Winchester and Front Royal, VA.
