This towering, freestanding Boston Sports Club is located in a very cushy Woburn business park, flanked by a Ratheon Office and a top-end hotel. Multiple stories tall, you can watch exercisers sweating on all three levels through floor to ceiling glass. This location has a giant parking lot, and while it isn't 24 hours, it's open quite early and quite late for a suburb location. There is no need to set up an appointment if you want to join, just drop by.