You've heard of Plymouth Rock, right? It is the site where the Mayflower Pilgrims landed to establish a colony which later led to the formation of the United States.
But did you know that Plymouth Rock is actually a piece of rock, supposedly located where the Pilgrims actually first set foot on land? In the 1700s, people carved "1620" - the year the Pilgrims came to America.
The rock had kind of a sad history:
During the Rock's many journeys throughout the town of Plymouth numerous pieces of the Rock were taken, bought and sold. Today approximately 1/3 of the top portion remains. It is estimated that the original Rock weighed 20,000 lb. Although some documents indicate that tourists or souvenir hunters chipped it down, no pieces have been noticeably removed since 1880.
And as if that's not bad enough, some people described it as "the most disappointing landmark in America" because of its small size and poor visitor access.
Link: Plymouth Rock [wiki]