Answer: Japan

If you’re a U.S. reader who has driven over the lengthy Golden Gate Bridge in San Francisco, we’ll forgive you for believing it to be the longest suspension bridge in the world (for it certainly feels that way as you traverse it). Not only is the Golden Gate Bridge not the longest suspension bridge in the world, it comes in at only 4,199.5 feet (1,280 meters) across the main span, leaving it tied for 18th place.

So where must you travel to see the longest suspension bridge? The Akashi Kaikyo Bridge in Japan, completed in 1998, is a staggering 6,532.2 feet (1,991 meters) long across the main span. While that’s an awesome engineering marvel that’s a little mind boggling in and of itself, what’s truly mind boggling is that the Akashi Kaikyo Bridge’s steel cable suspension system contains enough wire, 190,000 miles (300,000 kilometers) worth, to encircle the entire world over seven times.