Reply To: What is the Temple institute?

The Temple Institute has built what they consider to be kosher keilim for the Beis HaMikdash (which can viewed in their location in the Old City, and make for a fascinating visit regardless of what one holds of the Institute and its hashkafos) and hope to follow through and build the actual Beis HaMikdash themselves. Needless to say, almost everybody is vehemently against this idea. And yes, they are one of the groups that advocates Jews visiting Har HaBayis, which the vast majority of the Gedolai HaPoskim of recent generations have ruled is a chiyuv kares ch”v.