YOU SAID:
The students went on a field trip to a farmyard.
INTO JAPANESE
生徒は、農場に見学に行った。
BACK INTO ENGLISH
Students went to visit farms.
INTO JAPANESE
学生は、農場を訪問に行きました。
BACK INTO ENGLISH
Students went to visit a farm.
INTO JAPANESE
学生は、ファームを訪問に行きました。
BACK INTO ENGLISH
Students went to visit a farm.
That didn't even make that much sense in English.