"Charles-Louis Clérisseau (28 August 1721 – 9 January 1820) was a French architect, draughtsman, antiquary, and artist who became a leading authority on ancient Roman architecture ...
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and Roman ruins in Italy and France. With his influence extending to Russia, England, and the United States, and clients including Catherine the Great and Thomas Jefferson, Clérisseau played a key role in the genesis of neoclassical architecture during the second half of the 18th century." - (en.wikipedia.org 01.09.2022)