The largest man-made object, in terms of physical size, is subjective and depends on how one defines "object." However, there are several notable contenders for the title.
The Great Wall of China: Stretching over 13,000 miles (21,196 kilometers), the Great Wall of China is often considered the longest man-made structure. It was built over many centuries to protect China's northern borders.
The International Space Station (ISS): The ISS is an orbiting space laboratory and living space for astronauts from different countries. It has a large solar array and spans approximately 356 feet (109 meters) in length, roughly the size of a football field.
The Large Hadron Collider (LHC): Located underground near Geneva, Switzerland, the LHC is the world's largest and most powerful particle accelerator. Its circular tunnel has a circumference of about 17 miles (27 kilometers).
The Burj Khalifa: Standing at a height of 2,717 feet (828 meters), the Burj Khalifa in Dubai, United Arab Emirates, is the tallest man-made structure. It is a skyscraper with numerous floors and is an iconic landmark.
These are just a few examples, but the largest man-made object can be interpreted in different ways, depending on the specific criteria used for measurement.