The Netherlands has a huge spring celebration known as Queen's day. The main feature is a country-wide yard sale, when you can sell things without paying taxes. It's very popular. Everybody wears orange, because the royal family is from the House of Orange.
Earlier I posted live feeds from a Queen's night party -- at 2:00am their time the party-goers shut down the live cams and left the apartment. They headed out to party on the streets with everyone else! Sounds like a great time, doesn't it?
Orange houses on Whidbey Island.