Originally, 'Broadway' consisted of just the one street. However, the term now refers to the general area in the vicinity of Broadway and Times Square holding the 39 500-plus seater theatres, in much the same way as we have 'the West End'. Most of the theatres are within less than 10 mins walk of one another. 'Off-broadway' theatres are slightly more scattered around the city and consist of about 275 100-499-seat venues. They generally have slightly more experimental, untested work. The Broadway shows Rent and Avenue Q both started Off-Broadway. Then there is 'Off-off-broadway' which is generally very experimental, improvised, or artsy and in an fewer-than-100-seat venue.