Can We Offer the Korban Pesach Without the Beis HaMikdash?
Rav Tzvi Hersh Kalisher, the rav of Thorn, Germany, who
had studied as a youth in the yeshivos of Rabbi Akiva Eiger and the Nesivos HaMishpat (Rav Yaakov
of Lisa), published a sefer advocating bringing korbanos in the location where the Beis HaMikdash once
stood in Yerushalayim. Rav Kalisher considered it not only permissible to offer korbanos before the Beis
HaMikdash is rebuilt, but even obligatory.