Tech Titans' Glitzy Digs Don't Always Pan Out

Sun Microsystems was a high-flying tech titan, seemingly at the peak of its powers, when it moved into a gleaming-new 11-building campus on 57 acres of prime Silicon Valley property in the mid-1990s.

The future seemed limitless -- Sun flirted with buying a then-struggling Apple -- and it grew dramatically with sales of computer servers and storage to Web start-ups during the dot-com boom in the late 1990s.

Then the bubble burst in 2000. By 2010, Sun was forced to sell to Oracle for $7.4 billion , a slice of its former valuation.

The lesson of Sun's Icarus-like fall has not been lost on its current tenant: Facebook, which expanded to the Menlo Park, Calif. , site, left Sun's sign visible on glass doors as a reminder to employees of the risks of becoming comfortable with success.