Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)

Photo taken on April 17, 2019 shows a view of Villa d'Este in Tivoli, Italy. The Villa d'Este in Tivoli, with its palace and garden, is one of the most remarkable and comprehensive illustrations of Renaissance culture at its most refined. It was included in the UNESCO world heritage list in 2001. (Xinhua/Cheng Tingting)