Happy birthday, to UN Guided Tours! For 70 years, our multilingual tour guides have welcomed more than 42 million visitors from around the world, explaining to them how the #UnitedNations works to address some of the most pressing challenges facing humanity. Scroll through to see our colleagues greeting visitors to UN Headquarters in #NYC over the course of the past seven decades. 📷: UN Photo/Mark Garten, Yutaka Nagata & Andrea Brizzi #VisitUN #GlobalGoals #Throwback #Flashback