Yeehaw! This Tour Is Fun and FunkyI always take visitors to Boulder on the Banjo Billy's Bus Tours, one of the funnest, funkiest, funniest city tours I've ever been on. Storytelling, ghost stories, mysterious hotel rooms, and all the quirky Boulder facts you could want. The bus leaves from in front of the Boulderado Hotel and lasts about 90 minutes. They now do tours in Denver too.