But more importantly, given the fact of that the Czech-Jewish population of more than 118,000 was reduced to just 14,000 by the Holocaust, the community’s religious artefacts, records and much of the property of the 80,000 deportees murdered in the death camps were preserved for posterity by the museum under the noses of Nazi occupiers and the unsympathetic communists who followed them. To avoid being overwhelmed, start with the jewel in the crown, the vaulted, semi-subterranean, 13th-century Old-New shul, which, although the smallest of the historic synagogues, is still a place of worship for today’s community. The much newer Spanish...