In February, Aberdeen’s streets and public spaces will host Spectra, a free, after-dark festival of light and art. Over a dozen incredible installations—ranging from projection mapping on Marischal College to interactive arches, pedestrian-sensitive lighting and mobile artworks—explore this years theme however you like. Some are designed with community groups, others rely on audience participation. There are augmented reality pieces, installations to walk through, and temporary works that change with movement. Events run nightly from. Free evening bus travel is offered across the city. The festival draws thousands each year with its changing, temporary cityscape.