– Also known as the Great Wall of China. – Length: Over 21,000 kilometers. – Built to protect Chinese states from invasions.
– Length: Approximately 1,776 kilometers. – World's oldest and longest man-made waterway.
– Connects Moscow to Vladivostok, Russia. – Length: Around 9,289 kilometers.
– Length: Around 53.85 kilometers. – Connects Honshu and Hokkaido islands under the sea.
– Flows through northeastern Africa. – Length: About 6,650 kilometers.
– Flows through northeastern Africa. – Length: About 6,650 kilometers.
– Known as the Summer Solstice in the Northern Hemisphere. The day with the most daylight.
– Length: Over 202,080 kilometers. – Includes mainland and thousands of islands.