Camera Obscura & World of Illusions

Edinburgh's camera obscura is a curious 19th-century device – in constant use since 1853 – that uses lenses and mirrors to throw a live image of the city onto a large horizontal screen. The accompanying commentary is entertaining and the whole experience has a quirky charm, complemented by an intriguing exhibition dedicated to illusions of all kinds. Stairs lead up through various displays to the Outlook Tower, which offers great views over the city.