ברוך...שככה לו בעולמו is said upon seeing beautiful trees or creatures (animals or people).
O.C. 228 says (translation copied from this question
for seeing a person with a dark, very red, or albino white complexion- or a person who is bent over because of obesity, a midget, a person with a lot of warts, a person with hair that clings to each other, a mentally incompetent person, an person missing a limb, a blind person, a person with boils
If someone sees a beautiful midget woman or man, should s/he make both brachot? Is there any order to say them?