Photo: Jvhertum, CC BY-SA 3.0 via Wikimedia Commons
It's the only windmill (1814, restored) in the centre of Amsterdam, and the closest one that's open to visitors.
De Gooyer is a windmill in Amsterdam located between Funenkade and Zeeburgerstraat. It is the tallest wooden mill in the Netherlands at 26.6 meters high. It is registered as a National Monument.
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Artis
An entry ticket for Artis also provides admission to the Planetarium, the Aquarium and the Zoological Museum. Artis is also a botanical garden, with plants and trees gathered from all over the world, just like the animal species. Don't miss the Artis ZOOmeravonden.
Museum about microbes.
Dutch Resistance Museum
Museum showing what Amsterdam and Holland were like during Nazi occupation. Has a very nice children's section. If you are visiting with kids and want to go to a museum about the Second World War in the Netherlands this is definitely recommended.
Het Scheepvaartmuseum reopened in late 2011 following major renovations. Stimulating, interactive exhibitions allow visitors to explore 500 years of maritime history. The building, called the Arsenal, is impressive. The Central Square, the indoor courtyard can be visited for free and takes your breath away. Also the museum shop, the restaurant and the library are open to the public free of charge.
Filmtheater Kriterion
Nice small movie theatre. Also has a bar.
A small park with a World War II memorial located at one of the nicest canals in Amsterdam.