Advent Calendars - The History of a Christmas Tradition
Historical information from a German company that makes advent calendars.
Bengal Cat Advent Calendar for Cat-Lovers Enjoyment
Each day shows a photograph of a cat or a holiday graphic.
Billy Bear's Advent Calendar
Each day has a different picture that can be used as desktop wallpaper.
Castle Arcana: the Christmas Calendar
New pictures and stories each day. Has been in operation since 1997.
Christmas Advent Calendar
Songs and poetry for each day. Also features e-greetings, including a few in Thai and Chinese.
The Swiss village of Neuenhof features an annual photo gallery for December 1st through December 24th.
Dionaea's Advent Calendar
Various content for each day - kind of like fortune cookies.
Holidays On the Net - Advent Calendar
Count down to Christmas Day with holiday animations and seasonal music.
Tate's Advent Calendar
An Advent Calendar chronicling the adventures of Tate the cat, and his owner Pete.