Orbit , designed by Anish Kapoor and Cecil Balmond , at heart of Olympic Park . Tower stands 114.5m tall , making it Britain 's tallest sculpture . Comment: Mittal told CNN in May . ` Flight of 455 steps lead to viewing platform offering views across London .
Orbit , designed by Anish Kapoor and Cecil Balmond , at heart of Olympic Park . Tower stands 114.5m tall , making it Britain 's tallest sculpture . Comment: Flight of 455 steps lead to viewing platform offering views across London .