1879 - Laboratory of Experimental Psychology, University of Leipzig

In 1879, at the University of Leipzig, Wundt opened the first laboratory ever to be exclusively devoted to psychological studies, and this event marked the official birth of psychology as an independent field of study. Wundt began conducting experiments that were not part of his course work, and he claimed that these independent experiments solidified his lab's legitimacy as a formal laboratory of psychology, though the University did not officially recognize the building as part of the campus until 1883.

see more at: https://en.wikipedia.org/wiki/Wilhelm_Wundt