The phrase "drew a close" indicates the end of something. Some antonyms for this could be "started," "opened," or "launched," which imply the beginning of something new. Other antonyms could be "prolonged," "extended," or "perpetuated," which indicate a continuation or extension of the activity or event that has just ended. "Expanded," "blossomed," "flourished," or "thrived" signify growth and development, while "unveiled," "unlocked," or "revealed" connote the unveiling of something new, exciting, or unexpected. Overall, antonyms for "drew a close" should suggest the active beginning and flourishing of new ideas and experiences.