It took 177 years to build the Leaning Tower of Pisa. The construction of the tower began in 1173 A.D., and it began to sink in 1178 A.D. The tower was closed to the public in 1990 for fear of collapsing; however, it was reopened in 2001.Know More
The tower's lean is due in part by an unstable sub-soil and a shallow foundation; however, a restoration team was employed in 1999 that took 11 years to balance the tower and manage its dangerous tilt.
The tower's lean was corrected to a 3.99 degree angle from its previous 5.5 degree angle. The Leaning Tower of Pisa was announced as a UNESCO World Heritage site in 1987.Learn more about Architecture
The leaning tower of Pisa is made of white marble quarried from mountains close to the town. The tower began its famous lean about the time that the second story had been built. It took 199 years to complete the tower.Full Answer >
The Eiffel Tower was built for the 1889 World Exhibition in Paris. The tower took over two years to build, and it was meant to last only through the World Exhibition. Gustave Eiffel, for whom the tower is named, engineered and oversaw construction of the tower.Full Answer >
It depends upon the municipality and local zoning and building laws as to whether a homeowner can build a private water tower. Many towns and communities enforce strict laws, and construction permits may need to be obtained.Full Answer >
Materials used to construct the Eiffel Tower include wrought iron, steel and paint. Wrought iron forms the majority of the tower structure while steel provides additional support and paint adds aesthetic appeal along with protection from corrosion.Full Answer >