Did you know that Canada's Royal Saskatchewan Museum has one of the largest T. Rex skeletons in the world or that the ROM once had a cat who helped keep mice away from the museum's collections?
Each day, museums and galleries from coast to coast will be sharing their secrets, taking us deep into their archives and showing us things that might not be included in your audio guide.
The museums (including some of the greatest around the world) are starting the week by sharing some of their favourite secrets using the tag #SecretsMW. Here are some of the ones we loved.
The World's Biggest T-Rex (He's Just Big-Boned...)
The ROM's Fluffy Security Guard
They Sometimes Trade Artifacts Like Hockey Cards...
And The Public Only Gets To See A Tiny Fraction Of The Artifacts
There's A Lot That Goes On Behind The Scenes
And Sometimes The Building Is The Most Interesting Part
Museum Week runs until Mar. 29. Check your local gallery or museum for special programming.
ALSO ON HUFFPOST