The Lost Hero Resources

Like it says on the tin, this is Rick Riordan's website. It includes descriptions of all his books, a biography, news, ongoing projects, Chrion's guide to Greek mythology, and everything Riordanesque. 

This is a user-edited encyclopedia devoted to all the Percy Jackson books, including The Lost Hero. Again, it is not official, so it should be approached with care, but it does have a ton of useful information on just about everything you can think of in the books, and some you probably haven't even noticed yet.

This page is operated by the British Museum. It includes descriptions of each of the major Greek gods, along with important symbols and stories associated with each. Objects in the museum collection related to each God are also featured—so you can see what Apollo's lyre would have looked like. 

An interview with Rick Riordan about The Lost Hero and how it differs from his earlier books.

A series of short interviews with Rick Riordan, in which he talks about how he was slow to read and about his interest in mythology.

A brief animated video that introduces the major Greek gods. It includes juicy fast facts, like Zeus and Hera were siblings as well as husband and wife… a bit of information Riordan totally skipped over.

An interview with Rick Riordan, focusing mostly on his book The Red Pyramid, which deals with Egyptian mythology.

A picture of the Crown Fountain with it's fifty foot towers featuring various faces that appear to be spitting water. Leo, Piper, and Jason see Gaea's face on the tower before they go underground to Medea's department store.

The mountain over which Aeolus's mansion is suppose to float.

The mountain where the heroes fight the giant Enceladus in the San Francisco Bay area.

The house where Hera is kept in the last part of the book is a real house built by author Jack London and ruined by fire.