The prehistoric monument from more than 5,000 years ago is such a famous landmark that people might not think of it as mysterious anymore. But how and why these massive stones in England were made and arranged over the course of 1,500 years has captivated researchers, historians and curious visitors for generations. While it is generally accepted that it was built as a sacred temple and burial ground, how Neolithic people managed this massive architectural feat is still debated. If you’re fascinated by historic locations, check out these 50 must-visit American destinations for history buffs.