This 'indestructible' McDonald's burger hasn't decayed after 10 years

The burger on display at the hotel. (Snotra House)

A McDonald’s burger that has become an unlikely internet sensation has reached its “10th birthday”.

The burger was the last order ever purchased when McDonald’s closed its final store in Iceland back in 2009.

Sensing an opportunity, Hjortur Smarason bought one to see how long it would take to decay.

Initially he kept the meal in his garage before lending it to the National Museum of Iceland.

Thousands of people visit the burger each year according to the hotel. (Instagram)

"I decided to buy a last meal for its historical value since McDonald's were closing down," Smarason told AFP.

"I had heard that McDonald's never decomposed so I just wanted to see if it was true or not."

The burger is now on display inside a glass case at Snotra House, a hostel in Thykkvibaer in southern Iceland.

And it became even more famous after the hotel posted a live stream on the internet allowing thousands of netizens following a live-stream of its decay.

The hotel claims it receives up to 400,000 hits daily and hundreds of people have posted pictures on social media standing next to the meal.

"People from around the world... come here just to visit the burger," Sigurdur Gylfason, the owner of the establishment said.

“The burger and remaining fries are still in good shape even though it’s been almost 10 years since their sell-by date,” a post on the hotel’s website reads.

It is unclear how long the burger could potentially last before decaying entirely but fact-checking website Snopes says the idea that McDonald’s food “doesn’t rot” is false.

According to the website: “Failure to decompose is similarly attributable to rapid dehydration, environmental conditions, and other factors not always present when organic matter is allowed to break down “naturally.”

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