Real Madrid's Cristiano Ronaldo gestures during a ceremony for his contract renewal at Santiago Bernabeu stadium in Madrid, Spain, November 7, 2016. [Photo/Agencies]

"The numbers are impressive. I certainly never expected to make history at the best club in the world," the Portugal captain told a media conference.

"This new contract is a dream come true ... but it is my penultimate contract.

"I want to end my career at Real. This is the club that is in my heart and I will always be linked to it."

As well as picking up two of his three Ballon d'Or titles as a Madrid player, Ronaldo has won two Champions Leagues, one La Liga title and two Spanish Cups.

"There will be a before and after Cristiano Ronaldo," said Madrid president Florentino Perez.

"His trajectory is marking an era. He is the great icon of the club, a symbol of the best club in the world."

However, Ronaldo avoided guaranteeing he will retire as a Madrid player.

"I am very happy to finalize this dream of extending my contract. I want to continue making history for the best club in the world," he said.

"We will see what the future brings; you never know.

"I want to continue to give my best. To continue to make history, win titles and score goals."

Ronaldo is targeting 500 goals for Real.