Visiting the bridge and looking at the outside is of course free, but visiting The Tower Bridge Exhibition within has a small fee. Visitors begin by going up into the top of the north tower where there is a short introductory video with a screen that blends into the Victorian era props around it. Afterwards you get to move into the tower and enjoy the historical and artistic exhibits on the East and West Walkways. I can’t say that the walkway exhibits were the highlight, but there was some interesting information about the history of bridge construction for “how does it work?” types. (You should go to their website for more info on what exhibits are currently on view.)
They recently installed glass floors on the West Walkway, but this was shortly after my visit in September 2014 so I didn’t get a chance to experience this aspect of the bridge. I can only imagine the incredible view onto the bustling street below, but I can vouch for the panoramic views of the city from the top of the towers!
But for me, the best was yet to come. As part of your exhibition admission, you also get to visit the engine room that used to power the raising of the bridge. So check out The Tower Bridge Part 3: The Inner Workings next time!