Take a good look at that jagged line running down the side. What most people think is the crack is actually an intentionally widened groove. In 1846, after decades of use, a hairline fracture threatened to split the bell completely. To fix it, metalworkers used a technique called stop-drilling, widening the crack so the two sides would not vibrate against each other and cause more damage. You can still see the small drill bit marks if you look closely at the edges. This was the last year the bell ever rang; it fractured once more during George Washington’s birthday celebration that year and has been silent ever since. On a practical note for your visit, keep in mind that the Liberty Bell Center has no restrooms. For those, you will need to head to the Independence Visitor Center nearby. Also, if the lines are too long today, remember that the bell is visible from the Market Street window 24 hours a day, offering a beautiful, quiet view after sunset.