LUXEMBOURG Capital City HD

Although the capital city of Luxembourg is not particularly large, its layout is complex, as the city is set on several levels, straddling hills and dropping into the two gorges. The 70 m (230 ft) deep gorges are spanned by many bridges and viaducts. The city, because of its location and natural geography, has through history been a place of strategic military significance. The first fortifications were built as early as the 10th century. The Casemates Bock is a network of underground fortifications, built in the 18th century, that tunnel under the city. The fortifications and environs are recognized as a UNESCO World Heritage Site. Luxembourg City is a seat of several institutions of the European Union, including the European Court of Justice, the European Court of Auditors, and the European Investment Bank. September 11, 2010