i would check out the Russian pipeline or the Alaskan pipeline.
The Druzhba pipeline is the worlds longest pipeline and in fact one of the biggest pipeline networks in the world. The name Druzhba means friendship.
The Druzhba pipeline is the world's longest oil pipeline in fact one of the biggest oil pipeline networks in the world. It carries oil some 4,000 kilometres (2,500 mi) from the eastern part of the European Russia to points in Ukraine, Belarus, Poland, Hungary, Slovakia, Czech Republic, andGermany.
siberia
worlds longest toenailes
Canada
The worlds longest road bridge is in China
The Worlds Longest limo is 100 feet long ( 30 meters )
Hebesberger UT (Rossleithen) has the longest tunnel
The longest nipple had 4 or 5 cm
Australia.
Answer
The worlds longest river, the Nile, is in Africa