See the Leaning Tower of Pisa
Leaning Tower Of Pisa (La Torre Di Pisa)
"It's not an optical illusion, nor have the architects imagined it so crooked. No sooner had the tower reached the the third storey than the construction started sinking into the ground due to a poorly laif foundation and the leaning first became obvious. Today is keeps sinking at the regular rate of about 1mm a year, and even the weightiest of minds are not able to say with certainty what the future will bring for this Italian curiosity and an undisputable masterpiece of architecture."