Camera Obscura and World of Illusions is a quirky, family-friendly attraction near the castle, built around a Victorian camera obscura that projects live, moving images of the city onto a viewing table. Alongside this historic curiosity, five floors of optical illusions, mirror mazes, holograms and hands-on tricks delight visitors of all ages, and a rooftop terrace offers fine views over the Old Town. Fun, playful and a little mind-bending, the ticketed attraction is a great change of pace from the city’s grander historic sights.