You don’t need to be a construction worker yourself to be familiar with the work of some of the world’s most successful building tycoons. From Grand Central Station in New York City to the infrastructure of the city of Beijing, property developers have a hand in creating the structures that impact us the most. But these tycoons aren’t just master builders — they’re also incredible business minds, many of whom built their companies and later their empires as solo entrepreneurs. This infographic from construction equipment rental BigRentz gathers 10 of the world’s most successful property tycoons of all ages and nationalities as well as their quotes on what it takes to make it to the top.