There sure is, Karen. You might consider having your floors sanded and polyurethaned. There is a great article on how to do it yourself in the November, 1999 issue of the Family Handyman. It is worth reading the article even it you plan on having it done so you have a good idea what is involved. If you can't find the magazine elsewhere, like at a library, you can buy one for $4 by calling (715) 247-5060.
Since the floor is parquet and not strip hardwood, I think that you might want to call the pro's on this one. Sanding will be a lot more complicated since you will always be going cross-grain on part of the wood. The other thing you might want to consider is using an oil based poly. When a major company that makes both oil and water based poly told me to use oil based on our daughters stairs, I think that says something. And you will want a satin finish, not a gloss, for easy cleaning.