A debatable likeness of football star Cristiano Ronaldo was unveiled at an international airport in Madeira, Portugal, on Wednesday (March 29), as the airport was renamed Aeroporto Cristiano Ronaldo in his honour.

The Real Madrid forward and four-time world player of the year was born in Madeira.

The bronze bust of the 32-year-old, who is actually good-looking in real life, featured a toothy grin and bulging eyes, and the Internet has gone wild laughing at how ridiculous it looked.

Here are five other examples that would make you wonder what in the world the creators were thinking when making them:

1. Michael Jackson statue at Fulham Football Club's stadium

The 2.3m-tall statue of the late King of Pop was unveiled outside Craven Cottage in Fulham, London, on April 3, 2011.

It was not an April Fool's joke, but still it was mocked for not resembling the icon himself, and not having anything to do with football in the first place.

It had been installed by the club's former owner, Mr Mohamed Al Fayed, who was a friend of the late pop star.

But his successor Shahid Khan removed it in 2013. It currently stands in the National Football Museum in Manchester.

2. Oscar Wilde memorial in London

One of the greatest poets and authors, Oscar Wilde was honoured with a memorial in London in 1998.

"A Conversation with Oscar Wilde" features his head, cast in bronze, rising from a sarcophagus, while he holds a cigarette.

It was designed by British sculptor Maggi Hambling, and people have been wondering if it is a bench they can sit on.

Ms Hambling said that "the passer-by, should he or she choose to, can sit on the sarcophagus and have a conversation" with Wilde.

3. Donald Trump chicken in China

As the country prepared to ring in Chinese New Year this year, a giant chicken sculpture popped up outside a shopping mall in Taiyuan, in northern China's Shanxi province.

The scowling statue, complete with an orange pompadour, even had tiny wings parroting the American President's distinctive hand gestures.

Replicas of the bird appeared on the Chinese shopping site Taobao, on sale for as much as 12,000 yuan (S$2,505) for a 10-metre version.

4. Prominent figures in wax in China

Wax figures of former US President Barack Obama, Russian President Vladimir Putin and Japanese Prime Minister Shinzo Abe appeared in a shopping mall in Shenyang, in China's north-eastern Liaoning province, last year.

The Internet had a field day waxing lyrical about them, and how bad they looked.

Mr Abe was portrayed with a Hitler moustache, and in a kowtowing posture.

Netizens also criticised Mr Putin's wax figure as being too bald, and Mr Obama's as being too tanned.

One netizen summed it all up: "I can't tell who they are without reading the description."

Later, other wax figures of questionable likeness to other public figures were brought to light in various parts of the country.

"Victims" include tennis star Roger Federer, singer Lady Gaga and actor Leonardo DiCaprio.

5. Steve Jobs statue in Cupertino

A scale model of this statue was unveiled in Belgrade, Serbia, in 2014 by sculptor Dragan Radenovic.

It was selected from over 10,000 entries, and a larger version - three to five metre-tall - would go on to grace Apple's Cupertino headquarters.

The statue has been compared to robots from the Terminator films, with a bust of the late Apple founder atop a pillar. The numbers "1" and "0" flank the pillar, together with two Cyrillic letters.

So what do you think? Did the sculptor do a good... job?