Camera Obscura and World of Illusions

Camera Obscura and World of Illusions has been entertaining visitors at the top of the Royal Mile since the Victorian era, and it describes itself, fairly, as Edinburgh's oldest tourist attraction. The anchor is the camera obscura itself: a darkened chamber on the sixth floor of a seventeenth-century building, where a mirror at the top of the tower and a set of lenses project a live, moving image of the city onto a large white table. A guide turns the periscope across the skyline — the castle, the Royal Mile, Calton Hill, the Firth of Forth — and in daylight narrates the landmarks while visitors scoop up tiny pedestrians on pieces of card. It is a charmingly low-tech marvel that has been doing this since 1853. When it is dark or the weather is poor, the show uses a projection of daytime footage recorded from the tower, so the best experience comes on a clear day. Below the rooftop are five floors of World of Illusions, and this is where families lose track of time: a mirror maze, a vortex tunnel that makes you stagger though the floor never moves, rooms that shrink and enlarge people, holograms, thermal cameras, light and colour illusions, and photo opportunities at every turn. At the top, a rooftop terrace with fixed telescopes gives one of the best close views of the castle and down the Old Town. Most visitors take about an hour and three-quarters. Opening hours run well into the evening for much of the year, making it a strong late-afternoon or rainy-day choice, and booking online guarantees entry, though tickets can also be bought on the day when space allows.

The history is part of the charm. The camera obscura was installed in the mid-nineteenth century by Maria Theresa Short, an optician who ran a popular observatory in Edinburgh, and the building later became the Outlook Tower under Patrick Geddes, the visionary planner who used the rooftop view as the first step in teaching people to see their city as a whole. That idea — look at the city from above, then understand it — still works: the camera obscura show is one of the best orientations to Edinburgh's geography you can get, and it is especially useful at the start of a trip.

Doing it well: go up to the rooftop first, before the illusions, because the camera obscura shows run at intervals and fill up when the building is busy. A clear day transforms the show, so if the morning is bright, prioritise it. The illusion floors are best explored slowly, and staff are good at demonstrating the trickier exhibits. The vortex tunnel and mirror maze can unsettle people prone to dizziness. Children twelve and under must be with an adult. The building is old and narrow, with stairs between floors, so check access information in advance if needed.

Who will love it: families with children of almost any age, groups of friends, and anyone who enjoys interactive science. Adults visiting without children often enjoy it more than they expect, but if your time is short and your interests are strictly historical, the castle, Holyroodhouse and the underground close may be better uses of an afternoon. It pairs neatly with the castle and the Scotch Whisky Experience, all within a hundred metres on Castlehill, and its long hours make it a good choice for a wet evening after the museums have closed.