An island on the artificial Wörlitz Lake features Europe's only artificial volcano. When Leopold III went on a grand tour of Europe in the 1760s, he was captivated by a trip to Naples in which he saw a smouldering Mount Vesuvius and would have heard about the newly discovered town of Pompeii. Twenty-two years later, the German royal set about bringing a piece of Naples to Germany; he had his architect build a brick inner building nearly five stories high and cover it with local boulders. At the top, a hollow cone was made and contained a high chamber, complete with three fireplaces and a roof that contained an artificial crater that could be filled with water. He then constructed a lake around the volcano and invited his friends to watch an eruption. Only contemporary accounts detail what the 18th century artificial eruption would have been like, but the practice still takes place today, complete with modern effects, after the island was restored to its past glory.