Screen grab from a Web page showing how Google's home page looked 15 years ago.(Photo: Google)

SAN FRANCISCO — Google is offering up a retro look at its home page as the search giant marks its 15th anniversary this week.

For a peak at how the Google home page looked back in the day, do a Google search on "Google in 1998."

Google executive Matt Cutts tweeted the tip earlier today.

(Hat tip to Danny Sullivan at Search Engline Land for pointing it out.)