Concourse

Ansammlung

(a large group of people; a crowd)

Flughafenhalle

(airport terminal)

Flughafenterminal

(airport terminal)

Querbahnsteig

(a large open space in a building where people can gather)

Versammlung

(a large group of people; a crowd)

Wartehalle

(a large open space in a building where people can gather)

Zusammenkunft

(the running or flowing together of things; the meeting of things)