King's Day (Koningsdag)

King's Day (Koningsdag) on April 27 is the biggest street party in Europe, turning the entire nation into a sea of orange. Over 3 million people join the festivities nationwide, generating an estimated €500 million in consumer spending. This outdoor celebration outperforms #2 Amsterdam Dance Event in public participation by nearly 8x, drawing crowds that blanket every city street, canal, and park with free markets, live music, and the vibrant chaos of an open-air festival that transforms the Netherlands into a single, joyous community.