Smithsonian

The Smithsonian is a group of museums complied of the National Air and Space Museum, the Smithsonian castle (main building), the National Arts Gallery Museum, Native American History Museum, and other types of American History museums in Washington D.C. It was given to the United States government by a British scientist James Smithsonian.

The Titan's Curse
In The Titan's Curse, Zoë, Thalia, Bianca, Grover and Percy go to the Smithsonian Nathional Air and Space Museum. Atlas, Luke and Dr. Thorn were also there located across from the National Air and Space Museum in the National Scientific Museum formulating another plan to destroy the gods,which involved growing warriors from dragon's teeth and using them chasing Thalia. Percy killed the Nemean lion to save Thalia and got his pelt, which saved him more than once.