Year Built: 1859
Location: Berlin, Germany
Architect: Eduard Knoblauch, Friedrich August Stüler
It's not hard to imagine why Eduard Knoblauch's synagogue made it onto our list—check out the triple onion domes with their intricate gold work and gorgeous stonework on its base. This sort of Moorish inspiration is not just fit for mosques. It's interior has unfortunately been recently redone, but if the 19th century image is even close to correct, it's safe to say the interior was as much of a show stopper as the exterior.
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