6. Skanska
Employees: 43,060
Revenue: 15.13 billion euro ~ 16.05 billion USD
Market Cap: 8.5 billion euro ~ 9.02 billion USD
Net Income: 590 million euro ~ 626 million USD
With roots dating back to its founding in 1887, Skanska stands as one of the oldest construction companies in all of Europe. The Sweden-based outfit specializes in construction, property development, and infrastructure development. With operations in the Czech Republic, Hungary, Poland, and the Nordic countries, Skanska spreads its influence throughout Europe quite evenly. Major works contributed by Skanska include London’s St. Mary Axe, the Mater Dei hospital in Malta, and Heron Tower, the tallest building in all of London. Without question, the construction of such a building is only fitting for one of the biggest construction companies in Europe.