The State Hermitage Museum in St. Petersburg Russia is one of the world's largest (3 million items in collection) and one of the most respected. Larissa has previously written in The Bell Tower about some of the table bells in their collection.
They offer an English language version (in cooperation with IBM) of their website. This link will take you to the homepage from which you may access the entire museum.
http://www.hermitagemuseum.org/html_En/index.html
To access the section on bells, enter "bells" in the QUICK SEARCH block.