While witnesses have not detailed in this week's preliminary hearing what investigators believe Holmes did once inside the theater, sources have said they believe he propped open the theater's back door and went to his car to put on body armor and arm himself.

CNN: STORY HIGHLIGHTS

On the exposed lower level residents can find an open movie theater, barbecue, kitchenette and two fireplaces.

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Hooftstraat, as well as the lovely Vondelpark, with its fountains and open-air theater.

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