To obtain a laminated glass capable of reducing the difficulty of escape from the inside space by joining a reinforced glass plate, in which crack freely runs in a netlike state from one point when the one point is broken, to a glass plate having lower strength than the reinforced glass through an intermediate film.

The reinforced glass plate, which has 2.0-4.0 mm thickness and is reinforced, for example, by applying a thermal reinforcing treatment and in which the crack preferably starting from the broken point spreads through the whole surface of the glass plate from the one point of the surface, is joined to the non-reinforced glass plate having preferably 1.5-3.2 mm thickness and low in strength through the intermediate film (e.g. polyvinyl butylal film). The laminated glass is formed so that the end part of the reinforced glass plate is projected from the end part of another low strength glass plate, a window structure is constructed by arranging the reinforced glass plate to face the indoor side and another glass plate to face the outdoor side and supporting the end part of the laminated glass with the reinforced glass to preferably reduce the difficulty of escape.