Sri Maha Bodhi is a very special tree that people visit in Sri Lanka because it is said to be the oldest living tree in the world. It is over 2,200 years old, which is older than your great-great-great-great-grandparents!
This tree is called "Maha Bodhi" because it means "great enlightenment" and it is very important to Buddhists because they believe that the Buddha meditated under this tree and that's where he found enlightenment.
The Sri Maha Bodhi tree is so important that people build beautiful temples and shrines around it to honor it. Buddhists will come from all over the world to pray and meditate at this special place.
So basically, Sri Maha Bodhi is a really, really old tree in Sri Lanka that is important to Buddhists because they believe it's the place where the Buddha found enlightenment. It's a very sacred place that many people visit to show their respect and pray.