Frank Lloyd Wright is America's greatest-ever architect. However, few people know about the Welsh roots that shaped his life and world-famous buildings. Now, leading Welsh architect Jonathan Adams sets off across America to explore Frank Lloyd Wright's masterpieces for himself. Along the way, he uncovers the tempestuous life story of the man behind them and the significance of his radical family background. In a career spanning seven decades, Frank Lloyd Wright built over 500 buildings, and changed the face of modern architecture: Fallingwater, the house over the waterfall, has been called the greatest house of the 20th century the spiralling Guggenheim Museum in New York reinvented the art museum the concrete Unity Temple was the first truly modern building in the world. But the underlying philosophy that links all Wright's buildings is as important as anything he built. Those ideas were rooted in the Unitarian religion of Frank Lloyd Wright's mother. Anna Lloyd Jones was born and raised near Llandysul in west Wales and migrated to America with her family in 1844, most likely to escape religious persecution. Her son, Frank, was raised in a Unitarian community in Wisconsin, a small…