Changi Airport acts as a gateway to the rest of the world much like Singapore’s main port.
In order to be effective, an airport must:
- be accessible by roadways and public transportation, & have plenty of parking
- have areas for ticketing, check-in, baggage handling, & other freight / cargo
- keep the passengers safe
- offer food & other services
- maintain areas for the customs service (scanning / x-rays etc….)