Europe and North America

Las Médulas

In the 1st century A.D. the Roman Imperial authorities began to exploit the gold deposits of this region in north-west Spain, using a technique based on hydraulic power. After two centuries of working the deposits, the Romans withdrew, leaving a…

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Western Caucasus

The Western Caucasus, extending over 275,000 ha of the extreme western end of the Caucasus mountains and located 50 km north-east of the Black Sea, is one of the few large mountain areas of Europe that has not experienced significant…

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Works of Antoni Gaudí

Seven properties built by the architect Antoni Gaudí (1852–1926) in or near Barcelona testify to Gaudí’s exceptional creative contribution to the development of architecture and building technology in the late 19th and early 20th centuries. These monuments represent an eclectic,…

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