In the months before our grand opening, orange-vested Explainers brought the Exploratorium experience to unexpected spots around San Francisco. These weekly site-specific activities were designed to make San Franciscans notice and engage with the world around them, and to shake them out of their normal, everyday routines. Explainers helped people notice clouds at Aquatic Park, find north without a compass at Ghirardelli Square, experience our mobile Camera Obscura in Union Square, and challenge their perception out in the neighborhoods. Music by Pat Spurgeon.