City founded by Emperor Constance, 297
Ville impériale, Xth century
Peace between Barbarossa and Lombardy, 1183
Cathedral founded, XIth century
Bishop Salomon occupied the see, 891-919
St. Stephen's enlarged by Bishop Salomon, 900
Further embellished by Bishop Conrad of Altdorf, 935
Renovated by Bishop Theodoric, 1047-51
Council-chamber built, 1388
Roof of nave and aisles (in wood), 1600
Council concerning the three popes, 1414-18
Council condemning John Huss, 1414
John Huss burned alive, 1415
Reconstructed by Bishop Otto III., 1428
Consecrated to the Lutherites, 1522-48
Organ and case (restored 1819 and 1839), 1583
Catholicism reëstablished at Constance, 1550

DORTMUND

St. Mary's, XIIth century
St. Reinhold's nave and transepts, XIIIth century
St. Reinhold's choir, XVth century
Pfarrkirche, XIVth century

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EMMERICH

St. Martin's Xth century

ESSEN

Romanesque details of cathedral, 874
Crypt, transept, and choir foundation, XIth century
Seven-branched candlestick, 1003
Gothic additions, XIVth century

FRANKFORT