SHABBETAI ZVI'S CHILDHOOD HOME in Turkey is in danger of demolition. The Forward has the story:

Shrine of False Messiah in Turkey May Be Razed

Jay Michaelson | Fri. May 18, 2007

Far away from the eyes of the Jewish mainstream, in modern-day Turkey there live hundreds, if not thousands, of crypto-Jews — and today, one of their most sacred shrines is in danger.

This is the hidden, fascinating tale of the doenmeh, descendants of the faithful followers of the 17th-century false messiah Sabbetai Tzvi, who converted to Islam in 1666. Tzvi’s own conversion came under duress: The Ottoman sultan demanded that he don the turban or die after nearly one-third of European Jewry had come to believe he was the messiah and had begun swarming into Turkey, expecting the long-awaited triumph of the Jews.

Tzvi chose to convert, and most of his followers lost hope — but not all of them. Many saw the conversion as a heroic act of tikkun, or repair, and followed their messiah’s lead by outwardly becoming Muslims while secretly maintaining their messianic Jewish faith. They were called doenmeh, meaning “turncoats”— a pejorative term not unlike marrano (“pig.”) Among themselves, they were called ma’aminim, “believers.” Sabbateanism did not die out in 1666, or even 10 years later when Tzvi himself died. There were subsequent messiahs — largely forgotten men like Baruchiah Russo and Jacob Frank — and, as recent scholarship has shown, Sabbateanism greatly influenced the 18th-century emergence of Hasidism. And then there are the doenmeh, who live on until the present day, in secretive communities, at first primarily in Salonika and today almost entirely in present-day Turkey.

A move to tear down the Turkish home where Tzvi is said to have lived, however, may now disturb the balance the community has cultivated for centuries.

[...]

It sounds as though there actually is reasonable evidence that this is Shabbetai's house:

But is the house at 920 Agora Girisi, half-ruined and barely distinguishable from others in the old Jewish neighborhood (now mostly destroyed), really the birthplace of Sabbatai Tzvi, the “mystical messiah”?

Yes, according to Dr. Cengiz Sisman, an expert on Sabbateanism who received his doctorate from Harvard University. Sizman cited a wealth of evidence, including 1925 and 1940 newspaper reports of the house (the architecture of which is clearly described) being used as a “visiting site by believers,” a 1935 book by noted historian Abraham Galante, and a 1961 account by writer John Freely of a group of believers lighting candles and performing a ritual on the third floor of the building.

I've posted earlier on Shabbetai and Sabbateanism here, here, and here.

This sounds like a site of considerable historical interest and I hope it is preserved.

(This story via the article "Why I Study Sabbateanism" by Jay Michaelson in Zeek.)