Today was one of our biggest days so far. Bright and early this morning we arrived at St Paul's. It is very different to the other churches, chapels and cathedrals we've been to so far as it is so colourful and because of the magnificent dome. It is most definitely Christopher Wren's masterpiece. We am beginning to development a love hate relationship with stairs - hating the exhaustion and yet kind of enjoying it and its rewards at the same time! The whispering gallery inside the inner dome was good fun and again the views from the very top was spectacular on such a clear and hot day.

We went onto Millennium Bridge to get a good view of St Paul's and to feel like someone out of Spooks!

Then it was on to the Tower of London, something I'd been looking forward to a lot. We saw traitors gate, where prisoners entered by boat via the Thames, and saw Bloody Tower where it is believed the two princes were murdered on the orders of their Uncle Richard III so that he had no challengers to the throne. We also joined a tour so I could see the burial place of Anne Boleyn, along with Catherine Howard (wife number 5 of Henry VIII), Lady Jane Grey (16 year old Queen for only 9 days) and Sir Thomas More.

We also joined the giant line to see the Crown Jewels which were well worth the wait: included is the Star of Africa (the world's largest diamond), the 13th century coronation spoon (one of if not the only original crown jewels not to be destroyed in 1643 after the fall of the monarchy) and such a magnificent collection of crowns, swords and sceptres. One of the crowns, not used for coronation, was commissioned by King George V only because he was going to India and wanted to wear a crown. He couldn't remove the crown jewels from the UK so he spent £60,000 having one made just for the trip!

In the White Tower (the oldest building in the Tower of London, built by William the Conqueror around 1066) we saw two full suits of armour that belonged to Henry VIII: one in his early 29s and one when he was much older. The first one looks very strapping and muscular while the second one just shows how big he became in old age! Unfortunately we had to skip the torture section of the Tower but I'll definitely be back to explore even more of the Tower of London!

We took a ferry along the Thames to Greenwich which was lovely and raced through town up to the Royal Observatory to stand over the Meridian Line. The line was huge and it cost £5 just to see it! It was definitely still a fun thing to have done though.

We raced back to the ferry and went back to the Tower in time for a night time Jack the Ripper walk. It was a good chance to walk around the East End and hear the story of killings that caused such hysteria and that are still unsolved and so heavily debated.

And, after such a long day, we well and truly collapsed back at the hostel!