The Tour métallique de Fourvière (Metallic tower of Fourvière), a landmark of Lyon, is a steel framework tower which bears a striking resemblance to the Eiffel Tower, which predates it by three years. With a height of 85.9 metres and weight of 210 tons, the 'metallic tower' was built between 1892 and 1894.
During the Exposition universelle of 1914 in Lyon it had a restaurant and an elevator capable of taking 22 people up to the summit. Although used as an observation tower until November 1, 1953, nowadays it serves as a television tower and is not accessible to the public. At 372m, it is the highest point in Lyon.References:
The Petersberg Citadel is one of the largest extant early-modern citadels in Europe and covers the whole north-western part of the Erfurt city centre. It was built after 1665 on Petersberg hill and was in military use until 1963. It dates from a time when Erfurt was ruled by the Electors of Mainz and is a unique example of the European style of fortress construction. Beneath the citadel is an underground maze of passageways that can be visited on guided tours organised by Erfurt Tourist Office.
The citadel was originally built on the site of a medieval Benedictine Monastery and the earliest parts of the complex date from the 12th century. Erfurt has also been ruled by Sweden, Prussia, Napoleon, the German Empire, the Nazis, and post-World War II Soviet occupying forces, and it was part of the German Democratic Republic (East Germany). All of these regimes used Petersberg Citadel and had an influence on its development. The baroque fortress was in military use until 1963. Since German reunification in 1990, the citadel has undergone significant restoration and it is now open to the public as a historic site.