Almost 200,000 fewer people are visiting Canterbury Cathedral than 10 years ago, according to figures being reported today.
Authorities say a wave of terror attacks across European countries and the continued threat of terror is deterring visitors.
Just over 875,000 people visited the Cathedral in 2017 – down from the 1,068,000 who came in 2007.
It means the Cathedral has dropped from being the 19th most visited UK tourist attraction to the 43rd.
Fewer groups of schoolchildren are visiting as a result of the fear that they may become victims of mass killings.
Armed police were posted outside Canterbury Cathedral in the wake of terror attacks such as the killings of staff at French satirical magazine Charlie Hebdo in Paris in 2015. Other attacks have happened in Belgium, Germany and the UK.
Other major visitor attractions including the British Museum, the Tate Modern and the National Gallery also witnessed a decline in numbers last year.
However, St Paul’s Cathedral and Westminster Abbey saw their numbers rise in 2017 by 3.4% and 4.6% respectively.