Where do boys have Bar Mitzvahs?

Answer 1

Part of the bar mitzvah will take place in the synagogue, usually on the first Shabbat (sabbath) after (or on) the boy's 13th birthday, though this may take place on a different day in some communities, where he will carry out Aliyah - in which he is called up to read publically from the Torah (Jewish Bible), something he was not permitted do prior to reaching this age. This is the bar mitzvah itself, so that answers your question.

In modern times, the synagogue service is usually followed by a celebratory meal and party - this may take place in the home, but among affluent Jews a tradition has arisen to hold large and extravagant parties with some families competing over who can produce the most lavish event. As such, bar mitzvah parties can take place anywhere from the home in the case of small, family events to aboard specially-hired cruise ships. Although the party is now so associated with the bar mitzvah proper that many people assume it is part of the ceremony, it is entirely optional.