What is widely considered to be man's first celestial observatory?

More Questions:

The card game "Penguin" is a variation of what other card game?

What candy bar was named for a beloved horse of the Mars family?

Which book of the Bible follows Exodus?

In ancient Greece, what river did the souls of dead people have to cross?

What does a phobophobe fear?

What is the most popular animal eaten before it's born and after it's dead?

What TV show did "Empty Nest" spin off from?

What duo’s first names were Don and Phil?

Which sci-fi movie starred Jane Fonda as "Queen of the Galaxy"?

What animated trio is made up of Master Shake, Frylock, and Meatwad?

Who played the title role in the 1979 film "Mad Max"?

What scandal forced US President Richard Nixon to resign in 1974?

Which author wrote about the Cornish seaside boarding school Malory Towers?

Who played Matlock in the muder mystery series of the same name?

What US state is nicknamed "Little Rhody"?