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# Two underground tunnels dating from 1800 discovered in St Mark's Square in Venice during waterproofing works
- URL: https://theparnassian.com/en/na-ploshchadi-san-marko-v-venetsii-vo-vremia-rabot-po-gidroizoliatsii-obnaruzhilos-dva-podzemnykh-tonnelia-kotorye-datiruiutsia-1800-godom/
- Published: 2023-02-21T06:00:46.000Z
- Updated: 2026-10-01T05:37:03.000Z
- Author: Alexandr Radayev
- Tags: NB!, Archaeology, Architecture, Heritage

Two underground tunnels dating from 1800 have been discovered in St Mark's Square in Venice during waterproofing works. The tunnels now uncovered are used to drain floodwaters