1. Westminster: 4-Hour Walking Tour & St Paul's Cathedral Entry
Start with a walking tour of the history, culture, and legends of one of Europe’s best-loved cities. Head through Green Park to Buckingham Palace to watch the world-famous Changing of the Guard ceremony. Move on through Westminster and see Downing Street, Westminster Abbey, Big Ben, and the Houses of Parliament. After your walking tour, head over to St Paul's Cathedral, one of the oldest cathedral sites on the planet, and explore this relic. Finish your walking tour by heading to The Clink. See 20 sights in 1 day, including: Buckingham PalaceSt James PalaceChanging of the GuardQueen Victoria FountainGreen Park (Royal park)St James's Park (Royal Park)Admiralty ArchPall MallTrafalgar SquareWhitehallThe Royal Horse GuardHorse Guard ParadeDowning StreetBig BenWestminster AbbeyHouses of ParliamentParliament SquareLondon Eye