For years we've dreamed of sending people to Mars. With the emergence of disruptive new technologies from space companies and university researchers, it's now possible to design mission architectures that can transport humans to Mars and return them to Earth more safely and cheaply than ever before. This book outlines a practical and affordable plan for establishing a research facility on Mars for use by international crews over numerous missions, initiating a process of settlement and opening up a new world for human civilisation, while simultaneously bringing together the nations of Earth in a noble and historic endeavour. This is a non-fiction book with 300 pages. Most of it is quite accessible although some basic scientific literacy will be useful. There are some mathematical calculations relevant to spacecraft design, which may be of interest to engineers and students, but which can also be skipped over by other readers without loss of meaning. The book contains lots of new ideas related to human exploration of Mars, including several original spacecraft designs, ideas for how to obtain breathable air, water, energy and propellant on Mars, and an affordable humans-to-Mars mission architecture based on the latest space hardware. Anyone interested in exploration and settlement of Mars will enjoy this book