A point in Utah where the Union Pacific and Central Pacific railroad met.
A point in Utah where the Union Pacific and Central Pacific railroad came together in 1869, completing the first transcontinental railroad.
The railroad now connected trains from the Pacific all the way to the Atlantic, allowing an unprecedented flow of supplies, goods, people, and ideas from East to West and back again. Think about how amazing 4000 miles of railroad is. Now think about it again. This is America, folks.
Turns out that the railroads actually met at Promontory Summit, Utah (several miles away from PP), but for whatever reason everyone remembers Promontory Point.