YOU SAID:

I went to the window and looked into a garden

INTO JAPANESE

私は窓に行って、庭を見ました

BACK INTO ENGLISH

I went to the window and looked at the garden

INTO JAPANESE

私は窓に行って庭を見ました

BACK INTO ENGLISH

I went to the window and saw the garden

INTO JAPANESE

私は窓に行き、庭を見ました

BACK INTO ENGLISH

I went to the window and saw the garden