sex and fertility, with his grotesquely enlarged penis, was covered with plaster. An older reproduction was locked away "out of prudishness" and opened only on request – and only rediscovered in 1998 due to rainfall. In 2018, an ancient fresco depicting an erotic scene of "Leda and the Swan" was discovered at Pompeii. Many artefacts from the buried cities are preserved in the Naples National Archaeological Museum. In 1819, when King Francis visited the Pompeii exhibition there with his wife and daughter, he was so embarrassed by the erotic artwork that he had it locked away in a "secret cabinet" (gabinetto segreto), a gallery within the museum accessible only to "people of mature age and respected morals". Re-opened, closed, re-opened again and then closed again for nearly 100 years, the Naples "Secret Museum" was briefly made accessible again at the end of the 1960s (the time of the sexual revolution) and was finally re-opened for viewing in 2000. Minors are still allowed entry only in the presence of a guardian or with written permission. Tourism Pompeii has been a popular tourist destination for over 250 years; it was on the Grand Tour. By 2008, it was attracting almost 2.6 million visitors per year, making it one of Italy's most popular tourist sites. It is part of a larger Vesuvius National Park and was declared a World Heritage Site by UNESCO in 1997. To combat problems associated with tourism, the governing body for Pompeii, the 'Soprintendenza Archeologica di Pompei', has begun issuing new tickets that allow tourists to visit cities such as Herculaneum and Stabiae as well as the Villa Poppaea, to encourage visitors to see these sites and reduce pressure on Pompeii. Pompeii is a driving force behind the economy of the nearby town of Pompei. Many residents are employed in the tourism and hospitality industry, serving as taxi or bus drivers, waiters, or hotel staff. Excavations at the site have generally ceased due to a moratorium imposed by the superintendent of the site, Professor Pietro Giovanni Guzzo. The site is generally less accessible to tourists than in the past, with less than a third of all buildings open in the 1960s available for public viewing today. Antiquarium of Pompeii Originally built by Giuseppe Fiorelli between 1873 and 1874, the Antiquarium of Pompeii began as an exhibition venue displaying archaeological finds that represented the daily life of the ancient city.