If you haven't caught on yet, we're totally digging on National Geographic's new book "The 10 Best Of Everything."

So far we've taken a look at the world's best islands, 10 of the best UNESCO world heritage sites (see more here), 10 of America's best national parks, and London's best pubs -- in time for the Olympics, of course.

This time we're getting historical again with a look at some of the world's best cathedrals. Check out NatGeo's list in the slideshow below, then let us know which churches you think are missing in the comments below.

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  • #10 St. John The Divine

    New York, U.S.A.

  • #9 St. Sophia Cathedral

    Novgorod, Russia

  • #8 Canterbury Cathedral

    Canterbury, England

  • #7 Santa Maria Del Fiore

    Florence, Italy

  • #6 Reims Cathedral

    Reims, France

  • #5 Chartres Cathedral

    Chartres, France

  • #4 Rouen Cathedral

    Rouen, France

  • #3 Hagia Sophia

    Istanbul, Turkey

  • #2 Notre Dame de Paris

    Paris, France

  • #1 St. Paul's Cathedral

    London, England

  • Visit St Paul's Cathedral in London

  • For even more lists, check out National Geographic's "<a href="https://www.facebook.com/NatGeoBooks/app_211447252293968" target="_hplink">The 10 Best Of Everything</a>" on sale now.