Everybody poses for a photo ‘holding up’ the leaning Tower of Pisa, but would you climb it? The ‘lean’ factor looks quite concerning when you stand in front of the tower. ‘It probably won’t feel like much of an angle inside,’ I thought. I was wrong! Construction of the Tower of Pisa started in the 1100s and was soon made difficult on reaching the second level, when the foundations began to sink. However, construction continued and the tower became a seven-storey tower leaning at an angle of 5.5 degrees. Reinforcement work in the early 1990s reduced the angle to 4 to 5 degrees, but the top level is still almost…