Mary King's Close tour is not what you think. It’s not a scary tour or a hunted house, it’s a historic close located under buildings on the Royal Mile, in the historic Old Town area of Edinburgh. It’s very informative and you will definitely leave the house and you will be wondering in every shop next door what’s underneath. If it’s a rainy day, go for it, it’s a good way of trying something differant and kill 2h. If your claustrophobic, this is not your cup of tea. If you suffer from asthma , they will advise you to don’t take part.