concourse

noun

1. A large open space in or in front of a building where people can gather, particularly one joining various paths, as in a rail station or airport terminal, or providing access to and linking the platforms in a railway terminus.
2. A large group of people; a crowd.
3. The running or flowing together of things; the meeting of things; confluence.
4. An open space, especially in a park, where several roads or paths meet.