Wally’s Frozen Custard 22501 Harper Ave, St Clair Shores, MI 48080 ★★★★★ | Wally’s Frozen Custard is an iconic place for a cold treat. With a fun fire station theme, Wally’s has a wide variety of dessert options, ranging from frozen custard to sundaes to slushies. While it is always busy with cars lined up at the drive-through and customers waiting at the walk up window, it is always worth it. I usually order the chocolate frozen custard in a cake cone or the Hot Fudge Brownie Boat. Both are delicious and always hit the spot.