Behind the scenes at Singapore's Changi Airport

An Air New Zealand Boeing 787 taxies past a row of Singapore Airlines tails at Singapore Changi International Airport in October 2018.

Used mostly for training purposes, a former Vim Airlines Boeing 777 rests on a remote ramp at Singapore Changi International Airport in October 2018.

Available to all passengers for a fee of about $15, a pool provides a relaxing way to beat the heat and pass the time at Singapore Changi International Airport (October, 2018.)

An engine awaits being fitted onto a Singapore Airlines Airbus A380 at Singapore Changi International Airport in October 2018.

A Xiamen Air Boeing 737-800 taxies to the gate after landing at Singapore Changi International Airport in October 2018.

Sunflowers soak up the notorious Singapore heat at Singapore Changi International Airport's Terminal 2 in October 2018.

A public restroom is seen in in Singapore Changi International Airport's gleaming new Terminal 4 in October 2018.

A baggage handler carefully loads at stroller onto a Hong Kong-bound Cathay Pacific Airbus A330 at Singapore Changi International Airport in October 2018.

A Singapore Airlines Boeing 777-300 takes off from Singapore Changi International Airport in October 2018.

A Singapore Airlines Boeing 777-300 lands at Singapore Changi International Airport in October 2018.

A Silk Air Boeing 737 Max 8 jet takes off from Singapore Changi International Airport in October 2018.

Randika Jayakody samples a fine whiskey at a Duty Free shop in Singapore Changi International Airport's Terminal 2 while waiting for her connecting flight in October 2018.

A Philippines Airlines Airbus A321 taxis to a gate after landing at Singapore Changi International Airport in October 2018.

Tucked away inside Terminal 3 is a butterfly garden at Singapore Changi International Airport. (October 2018.)

A Singapore Airlines Boeing 777-300 lands at Singapore Changi International Airport in October 2018.

A passenger check-in kiosk is seen inside Singapore Changi International Airport's gleaming new Terminal 4 in October, 2018.

A free WiFi station invites passengers to log on in Singapore Changi International Airport's gleaming new Terminal 4 in October 2018.

Singapore Airlines jets line the Terminal 3 concourse at Singapore Changi International Airport in October 2018.

Singapore Airlines' jets line up outside Terminal 3 at Singapore Changi International Airport in October 2018.

Mahendiran, a contract horticulturist, tends to one of the many gardens inside Singapore Changi International Airport's gleaming new Terminal 4 in October 2018.

Singapore Airlines jets line a remote ramp at Singapore Changi International Airport in October 2018.

A Philippines Airlines Airbus A321 touches down at Singapore Changi International Airport in October 2018.

Colin Chng pours a free cocktail taster at the duty free counter in Singapore Changi International Airport's gleaming new Terminal 4 in October 2018.

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An Air New Zealand Boeing 787 taxies past a row of Singapore Airlines tails at Singapore Changi International Airport in October 2018.

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A Singapore Airlines Airbus A330 lands at Singapore Changi International Airport in October 2018.

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The tower at Singapore Changi International Airport is lit up on an early October 2018 morning.

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United Airlines' Boeing 787-9 lands at Singapore Changi International Airport in October 2018.

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A Singapore Airlines Airbus A380 lands at Singapore Changi International Airport in October 2018.

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Used mostly for training purposes, a former Vim Airlines Boeing 777 rests on a remote ramp at Singapore Changi International Airport in October 2018.

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Available to all passengers for a fee of about $15, a pool provides a relaxing way to beat the heat and pass the time at Singapore Changi International Airport (October, 2018.)

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An engine awaits being fitted onto a Singapore Airlines Airbus A380 at Singapore Changi International Airport in October 2018.

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A Singapore Airlines Airbus A350 lands at Singapore Changi International Airport in October 2018.

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A Xiamen Air Boeing 737-800 taxies to the gate after landing at Singapore Changi International Airport in October 2018.

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A Singapore Airlines Airbus A380 lands at Singapore Changi International Airport in October 2018.

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Sunflowers soak up the notorious Singapore heat at Singapore Changi International Airport's Terminal 2 in October 2018.

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A public restroom is seen in in Singapore Changi International Airport's gleaming new Terminal 4 in October 2018.

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An AirAsia Airbus A320neo lands at Singapore Changi International Airport in October 2018.

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A Scoot Airbus A320 takes off from Singapore Changi International Airport in October 2018.

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A baggage handler carefully loads at stroller onto a Hong Kong-bound Cathay Pacific Airbus A330 at Singapore Changi International Airport in October 2018.

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A Singapore Airlines Boeing 777-300 takes off from Singapore Changi International Airport in October 2018.

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A Singapore Airlines Boeing 777-300 lands at Singapore Changi International Airport in October 2018.

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A Silk Air Boeing 737 Max 8 jet takes off from Singapore Changi International Airport in October 2018.

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Randika Jayakody samples a fine whiskey at a Duty Free shop in Singapore Changi International Airport's Terminal 2 while waiting for her connecting flight in October 2018.

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Singapore Changi International Airport's gleaming new Terminal 4 as seen in October 2018.

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A Philippines Airlines Airbus A321 taxis to a gate after landing at Singapore Changi International Airport in October 2018.

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Tucked away inside Terminal 3 is a butterfly garden at Singapore Changi International Airport. (October 2018.)

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A Singapore Airlines Boeing 777-300 lands at Singapore Changi International Airport in October 2018.

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A passenger check-in kiosk is seen inside Singapore Changi International Airport's gleaming new Terminal 4 in October, 2018.

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A Singapore Airlines Airbus A330 lands at Singapore Changi International Airport in October 2018.

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A Singapore Airlines Airbus A380 lands at Singapore Changi International Airport in October 2018.

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A free WiFi station invites passengers to log on in Singapore Changi International Airport's gleaming new Terminal 4 in October 2018.

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Singapore Airlines jets line the Terminal 3 concourse at Singapore Changi International Airport in October 2018.

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Singapore Airlines' jets line up outside Terminal 3 at Singapore Changi International Airport in October 2018.

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Mahendiran, a contract horticulturist, tends to one of the many gardens inside Singapore Changi International Airport's gleaming new Terminal 4 in October 2018.

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A Scoot Boeing 787-9 lands at Singapore Changi International Airport in October 2018.

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Singapore Airlines jets line a remote ramp at Singapore Changi International Airport in October 2018.

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One of Singapore Changi International Airport's fire stations is seen in October 2018.

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A Philippines Airlines Airbus A321 touches down at Singapore Changi International Airport in October 2018.

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Colin Chng pours a free cocktail taster at the duty free counter in Singapore Changi International Airport's gleaming new Terminal 4 in October 2018.

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