Showing London to visitors is often a great prompt to take a closer look at our own city and that is how I ended up at St Paul's for the first time, despite having lived in London all my life.
I was pleasantly surprised at how much there is to do and see inside this iconic building. Yes, there is quite a hefty fee to be paid to gain entry, but if you book online you can reduce that slightly, skip any queues and get access for another 364 days at no additional cost - ideal for any Londoner. (Bear in mind that if you book online you do need to do so at least a day in advance.)
Once there the entry cost also includes access to an ipod, on which an interactive guide lets you plan your visit, providing pictures plans & audio commentary for various locations. Very comprehensive & you need it in order to make sure you get the best from your visit.
For me the best parts were the views - I had no idea that you could climb right to the top of the building & enjoy some of the best 360 views of the city. We were also blessed with an amazingly sunny day - which helped.
I intend to go back again to enjoy the nooks & crannies I didn't get round to on that first visit, despite spending most of a morning there.