The spire of St Olaf's Church (St Olav's Church) (Oleviste kirik) on the city skyline of Tallinn, Estonia, by the Gulf of Finland, Europe

Aerial image of Wasdale Head, with St. Olaf's church, the smallest church in England, Brackenclose, Wasdale Fell, Kirk Fell, High Fell and Mosedale, Lake District National Park, Cumbria, England, United Kingdom, Europe

The Old City walls, Old Town, UNESCO World Heritage Site, Tallinn, Estonia, Europe

Exterior of St. Olaf's church, Old Town, UNESCO World Heritage Site, Tallinn, Estonia, Europe

Exterior of St. Olaf's church, Old Town, UNESCO World Heritage Site, Tallinn, Estonia, Europe

Mooring ring, Olavinlinna Medieval Castle, (St. Olaf's Castle), Savonlinna, Saimaa Lake District, Savonia, Finland, Scandinavia, Europe

Olavinlinna Medieval Castle (St. Olaf's Castle), Savonlinna, Saimaa Lake, Savonia, Finland, Scandinavia, Europe

Olavinlinna Medieval Castle, (St. Olaf's Castle), Savonlinna, Saimaa Lake District, Savonia, Finland, Scandinavia, Europe

A couple take in the views of lower Old Town with Oleviste Church in the background, Tallinn, Estonia, Europe

Olavinlinna medieval castle (St. Olaf's Castle), Savonlinna, Saimaa Lake District, Savonia, Finland, Scandinavia, Europe

Olavinlinna Medieval Castle (St. Olaf's Castle), Savonlinna, Saimaa Lake, Savonia, Finland, Scandinavia, Europe

Elevated view of lower Old Town with Oleviste Church in the background, UNESCO World Heritage Site, Tallinn, Estonia, Europe

Elevated view of lower Old Town with Oleviste Church in the background, UNESCO World Heritage Site, Tallinn, Estonia, Europe

Girls relaxing beside Olavinlinna Medieval Castle (St. Olaf's Castle), Savonlinna, Saimaa Lake, Savonia, Finland, Scandinavia, Europe

Elevated view of lower Old Town with Oleviste Church in the background, UNESCO World Heritage Site, Tallinn, Estonia, Europe

Olavinlinna Medieval Castle, (St. Olaf's Castle), Savonlinna, Saimaa Lake District, Savonia, Finland, Scandinavia, Europe

Girls relaxing beside Olavinlinna Medieval Castle (St. Olaf's Castle), Savonlinna, Saimaa Lake District, Savonia, Finland, Scandinavia, Europe

Olavinlinna Medieval Castle, (St. Olaf's Castle), Savonlinna, Saimaa Lake District, Savonia, Finland, Scandinavia, Europe

Elevated view of lower Old Town with Oleviste Church in the background, UNESCO World Heritage Site, Tallinn, Estonia, Europe

St. Olaf's Norse church, Lunda Wick, built around 1200 and still used in 1785, graveyard has two memorial stones for Bremen merchants, who died in the 16th-century, Unst, Shetland Islands, Scotland, United Kingdom, Europe

St. Olaf's Cathedral, Oslo, Norway, Scandinavia, Europe

St. Olav's Church (Oleviste kirik) in Tallinn, Estonia, Baltic States, Europe

View from the cathedral hill, Toompea, towards the lower old town with city walls and St. Olafs church, Tallinn, Estonia

View from the cathedral hill, Toompea, towards the lower old town with city walls and St. Olafs church, Tallinn, Estonia

View over the old town of Tallinn seen from Rohukohtu terrace. One of the tower of the city walls in the front, St. Michael's monastery and St. Olaf's Church in the back, Tallinn, Estonia

View over the old town of Tallinn from Rohukohtu terrace. The towers of the city walls in the front, St. Michael's Monastery and St. Olaf's Church in the back, Tallinn, Estonia

View over the old town of Tallinn. From the left to the right: Langer Hermann-tower, Alexander-Newski-Cathedral, Olaichurch and Nikolaichurch, Tallinn, Estonia

Towers and roofs in the sunlight, Tallinn, Estonia, Europe

View over the old town of Tallinn from Rohukohtu terrace. The towers of the city walls in the front, St. Michael's Monastery and St. Olaf's Church in the back, Tallinn, Estonia

City wall, Revaler city fortification, Tallinna linnamueuer with wall towers and Olai church, Tallinn, Estonia, Europe

St. Olaf's Church and surrounding cityscape at dusk, Tallin, Estonia