They have opened a museum of sorts underneath the Terrasse to show the fortifications of the Chateau Saint-Louis which used to stand on the hill above the lower town and just in front of where the Chateau Frontenac now stands. They have computer screens which provide a lot of interesting information about the Chateau which once stood there and the people who used to live and work there. Very interesting and a nice place to cool off if its a little hot and sunny up above. There are plexiglass domes to let in light and to let the people up on the Terrasse look down onto the fortifications. Its tres cool!!
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