Nottingham's Centre for Decision Research and Experimental Economics celebrates its 25th anniversary

 In September, Nottingham's productive center for experimental economics celebrated a quarter century since it's founding: 

 CeDEx 25th Anniversary Workshop .

I just saw the announcement now, but maybe that's a sign of how successfully experimental economics has become established in the profession, over the last century and around the world.

 For some early history, see e.g. 

Roth, Alvin E. "The early history of experimental economics." Journal of the History of Economic Thought 15.2 (1993): 184-209.