Explore Amsterdam in style – aboard a glass-roof sightseeing bus – and then visit Gassan Diamond Factory to learn about the city’s most glamorous export! After enjoying panoramic views of Amsterdam’s trophy sites, like the Royal Palace and West Church, take a walking tour around the diamond factory to see rough stones polished into sparkling gems. If you want to explore Amsterdam’s UNESCO-listed canals, then upgrade to include a ticket for a 1-hour sightseeing cruise; it can be enjoyed on any day, not just on the day of your tour.