20th century in Amsterdam

fortification line in the Netherlands

horse-chestnut tree in the city center of Amsterdam that was featured in Anne Frank's The Diary of a Young Girl, Netherlands

Dutch company producing cocaine for medical purposes in the 20th Century

Vuurtoreneiland ("Lighthouse Island") is a small island in the IJmeer, Netherlands, just off the coast of Durgerdam. The island's main function is as a base for a lighthouse; a military fort on the island was abandoned in the 1930s.