What might seem like an ordinary stream is actually a testament to modern engineering. These are pictures of an old downtown highway in Seoul, South Korea, which was transformed into an eco-friendly park. In 2003, this South Korea restoration project, called the Cheonggyecheon Restoration Project, removed the highway dividing the city between the North and South. The stream was then recovered and turned into this awe-inspiring park.
The Cheonggyecheon Restoration Project took two years to complete and cost roughly $300 million, but it now provides a thriving stretch of green public space in the middle of Seoul, South Korea.