Interestingly, the original Ross design of Evanston (Ill.) golf club had two sections with shared fairways whereby par-3s were "paired " with par-4s:
4/5 in opposite directions and 11/12 at right angle.
1/18 at Chambers Bay overlap landing areas in opposite direction
My favorite of all are Ross' parallel long par-4s at Kennett Square (Pa.) G&CC, where the 8th and 17th start from the side wide teeing block, travel hand in hand down the same 140-yard wide corridor (separated by rough), and meet again at side-by-side twin greens.