Till now churches serve as navigation aids. I will try to collect some examples in this blog.

Most churches are Range Rear lights.

But  some  churches were daymarks and never lit.

Estonia, Tallinn, St.Olaf’s Church, built in the 12th century, never lit, 125 high.

Uruguay, Montevideo; Catedral Metropolitana, was lit from 1882 -1910

England, Burnham-on-Sea, St. Andrew’s Church, Range Rear, A5572.1

Portugal, Faro, Santo Antonio do Alto Church, D2214.1

Latvia, Riga, White Church, served as daybeacon first, later lit, C3547.2

USA, Massachusetts, Beverly, First Baptist Church, ARLHS USA-390, J0290.1

Portugal, Fuzeta, Igreja Matriz da Fuzeta, ARLHS POR-074, D2230.1

Morocco, Casablanca, Mosquée Hassan II, D2573.5

Denmark, Koge, St. Nicholas Church, a latern was hung from the tower

Spain, Valencia, Iglesia de Nuestra Señora de los Angeles, not active since 1918, ARLHS SPA-347

Estonia, Mattiase Kirik, active light, Madise Range Rear, ARLHS EST-078

Estonia; Kihelkonna Church, Range Rear, inactive since 1998, ARLHS EST-067

France, Normandie; Abbey Mont Saint-Michel, inactive light since 1904, ARLHS FRA-760

Netherlands, Brielle, St.- Catherines Church, the light on the tower was a rear light with Stenen Baken, inactive since 1850

Netherlands, Reformed Church Goedereede, used as lighttower from 1708 – 1912, ARLHS NET-039

Italy, Barletta, Chiesa dei Monaci, inactive at least since 2015, ex-Admiralty E2263.5

Netherlands, Texel, Den Hoorn, Hervormde Church, Range Rear, ARLHS NET-035

Finland, Helsinki, Church of Soumenlinna, Range Rear,  ARLHS FIN-063

France, Southern Finistere, Beuzec, Eglise Saint-Budoc,   Range Rear, ARLHS FRA-197

Germany; Cuxhaven-Altenbruch, St. Nicolai Church, twin towers were used in 16th century for navigation on river Elbe ( Foto by Ralf Poppe )

France, Normandy, Portbail, Église de Notre-Dame, Range Rear, ARLHS FRA-763

Poland, Church of St Adalbert, Frombork, Range Rear, ex C3213.1

Poland, Church of St James the Apostle, Tolkmicko, ex C3220.1

Poland, Ustka,  St. Nicolas Church, existed until the end of 19th century, day and night beacon

Italy,  Porto Civitanova Marche , Chiesa del Cristo Re, E2337.6

France, Dieppe, Église Notre-Dame-de-Bonsecours, not active, ARLHS FRA-849

France, Ouistreham , Feu Posterieur, Église Saint-Samson, inactive since 1888, ARLHS FRA-687

France, Plouguerneau, Northern Finistere, Eglise de St.Pierre et St.Paul, inaktiv, ARLHS FRA-783