Bridge of Sighs a translation from the Italian "Ponte dei sospiri" in the 19th century, comes from the suggestion that prisoners would sigh at their final view of beautiful Venice through the window before being taken down to their cells. In reality, the days of inquisitions and summary executions were over by the time the bridge was built, and the cells under the palace roof were occupied mostly by small-time criminals. In addition, little could be seen from inside the bridge due to the stone grills covering the windows. The name "Bridge of Sighs" has since been applied by association to other bridges
Limestone kilometers. The world's largest limestone quarry is at Michigan Limestone and Chemical Company in Rogers City, Michigan. Limestone is very common in architecture, especially in Europe and North America. Many landmarks across the world, including the Great Pyramid and its associated complex in Giza, Egypt, were made of limestone. So many buildings in Kingston, Ontario, Canada were, and continue to be, constructed from it that it is nicknamed the 'Limestone City'. On the island of Malta, a variety of limestone called Globigerina limestone was, for a long time, the only building material available, and is still very frequently used on