The Knights Templar were a Catholic military order formed in 1119 to protect pilgrims visiting the Holy Land. They grew rapidly due to donations and became one of the most powerful Christian forces. However, when the Holy Land was lost, support waned. In 1307, the Templars were arrested, tortured, and accused of heresy by the king of France. The last Grand Master was burned at the stake. Though officially dissolved, the Templars left a legacy through their buildings and financial innovations.