The Riihimäki–Saint Petersburg railway is a significant rail connection that links Finland and Russia. It starts in the city of Riihimäki and extends to Saint Petersburg, facilitating both passenger and freight transport between the two countries. This railway plays a crucial role in enhancing trade and travel in the region. Constructed in the late 19th century, the railway has undergone various upgrades to improve efficiency and safety. It is part of a broader network that connects major cities in Finland and Russia, contributing to economic growth and cultural exchange between the nations.