What is the biggest invention in the world?

 

What is the biggest invention in the world?

I am unsure if this could be classified as an invention, but it is pretty impressive nevertheless.

NEW-CENTURY-GLOBAL-CENTRE

According to the Independent newspaper:

“The numbers are little short of staggering; at 500 metres long, 400 metres wide and 100 metres high a 1.76-million-square-metre-mega-building has been opened in Sichuan province in southwestern China.

The New Century Global Center, officially the largest freestanding building in the world, took three years to complete and will house offices, shopping malls, a Mediterranean village, a 14-screen IMAX Cineplex and an ice-skating rink large enough to hold international skating competitions.”

Also in China, and perhaps more relevant as an invention, is this structure here:

GREAT WALL OF CHINA

According to History Extra:

“The Great Wall of China is an ancient series of walls and fortifications located in northern China, built around 500 years ago. Estimates of its length vary from 1,500 to 5,000 miles, but an archaeological survey carried out in 2012 by China’s State Administration of Cultural Heritage suggested the wall is more than double than that length: some 13,000 miles – or 21,000km – long…”

When I first saw this question, my initial thought was The Great Pyramid of Egypt. And then The Great Wall of China came to mind. Finally I settled for the first monstrosity… which could be classified as a vanity project. That is my opinion in any event. Should anyone out there in Quoraland disagree, I will be more than happy to be corrected.