Venture X - The Realm at Castle Hills coworking & office space for rent is located in Lewisville near The Colony City of Texas. Book a private office, flexible, shared workspace/desk, virtual office, event space, meeting, or conference room. Office space for rent for entrepreneurs, startups, SMBs, professionals, & teams. Get the privacy of modern private office space or a vibrant community of flexible shared workspace. Virtual office & business address with a secure mailbox.