Tulip or not tulip….the answer is to always tulip! Visiting Amsterdam during tulip season seems like a MUST. The best time to see tulips in Amsterdam is from March - May, especially mid April, according to their tourism websites.
I Amsterdam
One of my favourite outdoor sites in Amsterdam was the "I Amsterdam" sign in Museumplein, behind the Rijksmuseum and near the Van Gogh Museum. The Van Gogh Museum, btw, was by far the best museum I went to. The Anne Frank House was incredibly moving as well, but more on that later.