Amsterdam City of Diamonds Tour Historical City Walk Are you interested in both diamonds and the story of the people behind them? Combine a guided city walk with a guided visit to one of Amsterdam’s most famous diamond factories. An opportunity to learn all about the people as well as their product. During the walking tour, the guide uses personal stories from her family tree to illustrate the diamond workers’ history. Throughout the walk, these people – and their legacy – come back to life. After the city tour, a warm welcome awaits you at the world’s oldest diamond polishing factory.