Like Westminster Abbey, there is a fee to enter, @$24, and you cannot visit on Sundays. Unlike Westminster Abbey, there is more to see here. St Paul's has one of the most amazing ceilings in any church. A climb of 259 steps will take you to the Whispering Gallery, but this is a trip not for those who suffer from vertigo, as I do. If you're okay with this, walk around about one third of the gallery, and continue your upward journey. Add another 271 steps and you reach the exterior Golden Gallery with views across London. Prince Charles and Lady Diana were married at St Paul's.
St Paul's narrowly escaped being destroyed by Nazi bombing in World War II.

It's years since my wife and I visited Str Paul's. Then, it was dark, dusty and not all that pleasant. I suppose the place was given a good spruce up for the Royal Wedding and now it is just magnificent.
Look inside the tower to the right of the main door and see a beautiful cantilever staircase, looking like a giant corkscrew above your head. The chapel next door (I think it was St George's) holds some surprises for Australians. There's a bishop's chair that on closer inspection was dedicated to Australian explorer John Forrest and the main stalls remember a Tasmanian bishop.
The main doors are immense and it was surprising to find a large American War Memorial behind the main altar. When we visited, it was a sunny morning and the mosaics shone as their makers intended.
The crypt was full of interest, with the tombs of Wren, Nelson, Wellington and Churchill among others. On a wall was another interesting memorial slab, for Billy Fiske, the first American to be killed in uniform in WW11 and the subject of a film being made, controversially, with Tom Cruise in the lead part.
It seems wrong to have to pay to enter a cathedral and I expect anyone would be entitled to demand free admission, but, having paid and viewed, I would say it is money well spent.

We decided late in the day — 4pm to go to St.Paul's, it was a Saturday night.
As soon as you approach the Cathedral you are filled with awe and amazement it is such an impressive building from the outside. Inside it is even more impressive. We spent time sitting and looking up at the ceiling and artwork and then walking around reading the plaques on the wall. You could do the whole guided tour by earphone, if you want to but as we arrived just before evensong this was not an option for us but we were happy with that.
As we had arrived the choir were assembling for evensong, it was truly atmospheric. When the choir started to sing, the hairs on the back of my neck stood up, even my friends were touched by the sound and atmosphere . It was a very special experience.
If you get the chance, do St.Paul's Cathedral in the evening, you wont be disappointed.

We decided to not enter because of the price : 20£ ! It's very beautiful but we weren't sure that it was worth the price. The architecture is great but we stayed outside to observe that attraction