Crown Castle International Corp. is a real estate investment trust company, which engages in the provision of access to wireless infrastructure via long-term contacts. It operates through the following segments: Towers and Fiber. The Towers segment offers access, including space or capacity towers dispersed throughout the United States. The Fiber segment covers access, including space or capacity of fiber primarily supporting small cell networks and fiber solutions. The company was founded by Ted B. Miller Jr. and Edward C. Hutcheson Jr. in 1994 and is headquartered in Houston, TX.