Where in the world did that happen?

Hendrik Goltzius (1558-1617), Water, 1586, Engraving.

According to the Humoral theory, women were believed to be cold and wet. Here Hendrik Goltzius depicts the element of water with a nude female model with a fabric draped over her. 

Hendrik Goltzius (1558-1617), Fire, 1586, Engraving.

According to the Humoral theory, men were believed to be hot and dry. Here Hendrik Goltzius depicts the element of fire with a nude male model with a cloak around his neck. 

Bartholomeus Spranger (1546–1611), Hermaphroditus and the Nymph Salmacis, 1580-82, Oil on Canvas

Salmacis who enchants a spring to make it so anyone who bathed in it would come out half-man and half-women.