1
Sagrada Familia
- Duration (Years)
- 144
- Location
- Barcelona, Spain (Started 1882, estimated completion post-2026)
This list compiles the religious buildings with the longest construction periods still in use. Spanning centuries, these structures reflect the evolution of technology, regime changes, and shifting artistic styles, standing as enduring symbols of human dedication and faith.
Note: The Sagrada Familia, ranked first, is technically unfinished but functional, a rare feat in architectural history.
| Rank | Name | Duration (Years) | Location |
|---|---|---|---|
| 1 | Sagrada Familia | 144 | Barcelona, Spain (Started 1882, estimated completion post-2026) |
| 2 | Ulm Minster | 513 | Ulm, Germany (1377–1890) |
| 3 | Cologne Cathedral | 632 | Cologne, Germany (1248–1880) |
| 4 | Milan Cathedral | 579 | Milan, Italy (1386–1965) |
| 5 | St. Vitus Cathedral | 585 | Prague, Czech Republic (1344–1929) |
| 6 | Seville Cathedral | 125 | Seville, Spain (1401–1526) |
| 7 | Norwich Cathedral | 115 | Norwich, UK (1096–1211) |
| 8 | Lincoln Cathedral | 200 | Lincoln, UK (1088–1311) |
| 9 | Florence Cathedral | 140 | Florence, Italy (1296–1436) |
| 10 | Westminster Abbey | 500 | London, UK (1065–1560, major phases) |
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