At one of Amsterdam's most famous parks, travelers can enjoy a host of outdoor activities amid beautiful English-style landscaping. Here, you can hike the countless trails or ride a bike around to spot charming bandstands and even a sculpture by Picasso along the way. Have a picnic by the pond as herons and ducks waltz past or pop by one of the many cafes in the park. You might want to visit between April and May to see the park awash with tulips in bloom or between May and September to watch live concerts at the open-air theater. – Tripadvisor