The Seven Wonders of the Industrial World are some of the most impressive feats of engineering and construction in history.

Here are five of the most amazing examples:. The Great Wall of ChinaThe Great Wall of China is the largest man-made structure in the world and was built over a period of more than years. The wall is made of a variety of different materials, including stone, brick, and earth, and is over , miles long.

The Panama CanalThe Panama Canal is a waterway that connects the Atlantic and Pacific oceans.

The canal was built between and and is one of the largest and most complex engineering projects in history. The Brooklyn BridgeThe Brooklyn Bridge is one of the most iconic bridges in the world.

The bridge was built between and and is made of iron and steel.

The Eiffel TowerThe Eiffel Tower is the tallest structure in the world and was built between and . The tower is made of iron and steel and is over , feet tall.

The Hoover DamThe Hoover Dam is the largest dam in the world and was built between and .

The dam is located in Nevada and is made of concrete and granite.