Changi Airport gave a sneak peek on Monday of what the interior of the new Terminal 4 (T4) is set to look like.

In a series of pictures posted on Facebook that day, the public got a look at T4's departure and arrival halls, as well as transit and boarding areas.

The departure hall, for instance, is a vast space devoid of columns, and has a high ceiling with petal-shaped skylights to allow natural light into the terminal.

Greenery is a key feature - its greenwall facade on the exterior consists of 16,000 plants, while the arrival hall also has a green theme.

Changi Airport's last update on T4 last month revealed that more than 80 retail outlets will be spread over 16,000 sq m, describing the terminal as a shopping and dining haven featuring popular brands, innovative concepts and unique experiential zones.

Two core duty-free categories - Liquor & Tobacco and Cosmetics & Perfume - will combine and operate in a single zone, while there will also be a heritage zone inspired by Peranakan shophouses.

Retails shops opening their first outlet in Changi include paper maker Moleskine, British retailer WHSmith and home-grown footwear label PAZZION.

T4, which is set to begin operations in the second half of this year, will be Singapore's first checkpoint with multiple biometric capabilities.

Lee Min Kok