The use of decorative, festive lighting during Christmas is a long standing tradition in many Christian cultures, and has been adopted as a secular practice in a number of other non-Christian cultures too.
Displays of Christmas lights in public venues and on public buildings are a popular part of Christmas. The displays utilise Christmas lights in many ways, including decking towering Christmas trees in public squares, street trees and park trees, adorning lampposts and other such structures, decorating significant buildings such as town halls and department stores, and lighting up popular tourist attractions.
Here are a few pictures of the christmas lighting in a few parts of the world. (Picture courtesy: Internet)
In Toronto, Canada