This extensive Web site catalogs 1,000 great buildings by hundreds of architects. Search for a specific building, from the Chateau de Versailles to Frank Gehry's Venice Beach House, or browse by building name, architect, or location.

You'll find detailed information on each building, including a photo, the date it was built, its architectural style, exact size, a brief discussion of its importance, a bibliography, and links to more resources. The entire site is cross-referenced. For example, if you click on the architect in a building's description, you'll be taken to a complete list of his or her works.

Seattle, how are you feeling tonight! I'd like to introduce to you a lifelong guitarist, rock musician, Jimi Hendrix fan, billionaire... Microsoft co-founder Paul Allen! Yep, you won't find Mr. Allen's newest creation in a software package. Instead, it's located in a twisted, flowing building beneath the Space Needle in the city Microsoft calls (and Jimi Hendrix) called home.

The $100 million, 140,000 square foot interactive museum of rock music is now open to the public. In case you aren't able to make the trip anytime soon, this Web site is here to keep you occupied (and whet your appetite for the real thing). Experience online exhibits, explore rock-n-roll artifacts, even learn the history of Hip Hop. Then download some free software that will let you create your own virtual guitar music on your computer. Who says you need an instrument to be a rock star?