The canal was completed in 1914. I think it qualifies as a civil engineering wonder because it connects two major oceans and is an essential part of maritime travel. It is located in Panama: Map
The Second Wonder: Great Pyramid of Giza
The pyramid took over 20 years to construct and it was completed around 2560 BC. The pyramid was the worlds tallest structure for over 3800 years from about 2570 BC to 1300 AD. It is located in Cairo, Egypt: Map
The Third Wonder: Golden Gate Bridge
The Golden Gate Bridge was completed in 1937. When it was constructed, the Golden Gate Bridge had the longest suspension bridge span in the world. It is located in San Francisco: Map
The Fourth Wonder: Itaipu
Itaipu Dam was finished on May 5, 1984. It supplies 93% of Paraguay's power and 20% of Brazil's power. It is located on the boarder of Brazil and Paraguay: Map
The Fifth Wonder: Empire State Building
The Empire State building was completed on May 1, 1931. It was the world's tallest building for more than 40 years until the World Trade Center was built. It is located in New York City: Map
The Sixth Wonder: Delta Works
The Delta works were completed in 1997. They are a series of constructions that protect the southwest of the Netherlands from the sea: Map
The Seventh Wonder: Channel Tunnel
The Channel Tunnel was completed in 1994. It is a rail tunnel that runs between England and France underneath the English Channel: Map