Amsterdam is a beautiful city with a lot to offer. Here is a suggested itinerary for spending three days in Amsterdam, based on the search results:

Day 1:

• Start at Museumplein and visit the Rijksmuseum and Van Gogh Museum.
• Check out the Central Station.
• Stroll through Vondelpark.

Day 2:

• Visit the Anne Frank House.
• Explore the Jordaan neighborhood.
• Visit the Amsterdam History Museum.
• Take a canal tour.

Day 3:

• Visit the trendy Amsterdam Noord neighborhood.
• Take a ferry (it’s free!) from the Central Station.
• Visit the up-and-coming area of Noord Amsterdam.
• Visit Oosterpark.
• Take a day trip to the Dutch countryside.

Other suggestions:

• Rent a bike to explore the city.
• Visit the Waterlooplein Flea Market.
• Check out the Red Light District.
• Try some local food, such as fish & chips or cheese from a local farm shop.

Remember to take breaks and enjoy the city at your own pace. Amsterdam is a compact city, so its easy to walk or bike around. Spend longer than you think here, as there is a lot to do and see.