Basilica di Santa Tecla was a former, paleo-Christian basilica church in Milan, region of Lombardy, Italy. It was originally established in 350 and demolished in 1458. Remnants of the structure have been excavated underneath the Milan Cathedral.

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According to a number of historians the construction of the Basilica was ordered by Roman Emperor Constans in 345 under the name Basilica Maior. It was then founded in 350.^[1]

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