Chapter 2 - Witch Trials | Collectibles Murdered: SS Guide

Head to the place where the crashed car is (where you've activated the "Near Gas Stations" cases). Walk along the street with a green van. Reach a wall and turn right. You will reach a square with a cannon. Cross the square heading north-west. This way you will get to another square, with three cars on it. There is a trash can and a blind alley nearby. You will find the Judgment House Plaque there.

There are several such Plaques.