10. There Used to be a Pavilion in Union Square Built for Protesting

Image from Library of Congress 

Historically, Union Square has been the site of many demonstrations, including rallies during the Civil War. You might be surprised to know that the city was once required to construct places for people to protest–this pavilion is an example. This is the front, during a socialist and labor union demonstration on May Day at Union Square and these are the stands in the back, during a barber’s strike.