It is a three-story museum that was built in 1988 to house the temple's collection of national treasures, which includes a wide variety of artifacts such as statues of Buddhas, bodhisattvas, guardians, scrolls, paintings, and other items.

I've decided to include it here for one particular reason - it is the first place in Japan where I could examine and check out those statues (that you can usually see in temples all over Japan) up close, and they are quite impressive (though I cannot say that I am a fan of museums).

I do recommend visiting this museum only if you have already visited all of the other locations in this area (Todo area of Enryaku-ji) and still have some time left (plus some time to get in time for your Funicular train that heads down the mountain).