The Spanish & Portuguese synagogue at Bevis Marks in the City of London is well worth a visit. The last time my parents were in town we went for a tour given by an ebullient guide who was a big fan of Ben Disraeli and who taught us the story of the congregation and the building.
In Apollo magazine, Sharman Kadish has written a good summary of the ongoing threat to Bevis Marks from proposed overbearing office developments. (Dr Kadish also wrote a 2004 article on “The ‘Cathedral Synagogues’ of England” in Jewish Historical Studies.)
One planning application which would have almost completely cut off the synagogue’s natural light has been rejected but others loom on the horizon, one recommended for approval by the City’s planning czars.
London blog ‘Ian Visits’ visited Bevis Marks in 2019.
The synagogue is now temporarily closed to visitors for renovations but shabbat services continue to take place. Visiting information otherwise can be found on the congregation’s website.
Incidentally — given that November is the month of the dead — the name carved above the entrance of the synagogue is Kahal Kadosh Sha’ar ha-Shamayim, or ‘Holy Congregation of the Gates of Heaven’ which mirrors the Catholic cemetery where two of my grandparents are buried.