The ring of canals in Amsterdam were added to the Unesco world treasure.Seventeenth-century Canal ring area of Amsterdam: The 17th century canal ring area of Amsterdam inside the Singelgracht was built during the Dutch 'Golden Age' when the small village became one of the most important ports in the world. The canal ring area of Amsterdam is a network of canals around the historic centre of Amsterdam. The canals were dug to drain the swampland, the unique 17th century canal houses were built on the drained land. The canal ring area of Amsterdam is a good example of Dutch urban development in the 17th century and was the largest urban extension of its time. The House of Anne Frank is located in the canal ring area of Amsterdam at the Prinsengracht 263-267. Here Anne Frank was hiding in a secret hiding place during WWII to escape the Nazis. Here she wrote her famous diary. The Westerkerk Church was built by the famous Dutch architect Hendrick de Keyser. The famous Dutch painter Rembrandt is probably buried here. Amsterdam, the capital city of the Netherlands, is called the 'Venice of the North', comparing the city to Venice in Italy, because there are more than 100 km of canals, about 90 islands and more than 1200 bridges. The Seventeenth-century Canal ring area of Amsterdam inside the Singelgracht gained the status as an UNESCO World Heritage in 2010. World Heritage Art: