Galaxy Cauldron- A great collection of information over the Sailor Moon series, both anime and manga.
Also points out some of the differences betwixt the Japanese and English versions.

Usagi and Mamoru.com- Lots of images of my favorite couple ^ ^

A Breeze of Thunder- Nice, categorized galleries of the Sailor Moon characters. Also a few other
things such as animated gifs.

TuxedoMask.com- Enough stuff to keep any moonie happy for a while. Music, a chat room, forums,
lots of info, galleries, media for your computer and much more! Have fun ^_^

SailorMoon.com- You'll be required to create an account in order to access the site. The reason for that
is you have an email account, profile and such as that once you sign up. Seems to be mainly for chatting.

Sailor Moon Online Paradise- No longer updated, but still worth a visit. Images, music and computer goodies.

Sailor Moon Experience- A few graphics, a Sailor Moon encyclopedia, and a few other fun things.

Sailor Moon Palace- A good variety of features including graphics, music, games, computer goodies,
buttons and banners...well, more things than I can list.

MoonPrincess.com- Informative site based on the relationship between Usagi and Mamoru.

Volume Infinity- Images from the original art collection of Sailor Moon Volume Infinity. Also has translations of
some of the text contained within.

Manga Style!- Good coverage of the Sailor Moon manga, with scans of the artbooks and new
works by Takeuchi Naoko.