Amsterdam has more than 100 kilometers of canals, about 1500 bridges and 100 islands. The main canals are Herengracht (Patrician’s canal), Keizersgracht (Emperor’s canal) and Prinsengracht (Prince’s canal). They exist since the 17th century. The canal ring area of Amsterdam including these three channels has a status of UNESCO World Heritage Site.
Around 17% of the land area of the Netherlands has been reclaimed from the sea or lakes. This was achived by building dams and windmills. The latter were used to pump the water (as well as to grind grain into flour and to saw wood).
In 1740s a system of 19 windmills was built in Kinderdijk in order to drain the polders. Today these windmills are one of the most popular tourist attractions in the Netherlands.
Baarle-Nassau is a little town in the South of the Netherlands. What makes it special is that there are numerous little exclaves of Belgium just next to this town. The borderline is extremely complicated. At many places it is depicted on the ground, which allows you to take funny fotos.