When rivers are rerouted or dammed, or when lakes or reservoirs are built, previously dry land becomes part of the waterway. Most buildings in such places are either torn down or are eventually destroyed by the water, but some large stone edifices survive even under water. See eight of these building that only stick out a little above the surface, or only peek out now and again. Plus a bonus: a formerly drowned church in Venezuela that, due to a severe drought, is now on dry land again. Pictured here is the Church Of Altgraun In Lake Reschen, Italy. Link
(Image credit: Wikipedia user Markus Bernet)
Interestingly there are myths all over the world of churches still standing in reservoirs when the church was demolished along with the other buildings. A myth persists that on still nights the bells of Derwent church can be heard from the shores of Ladybower reservoir in Derbyshire. This has never been true, because although the church spire remained intact for three years after the valley was inundated the bell was taken to another church the year before inundation. Three years after the waters rose the church spire was demolished. It is reported that the church spire remained intact due to public pressure. Once the fuss had died down it was demolished. Even though both these facts are known and that the water level has fallen low enough to clearly show the site of the old church on several occasions the myth still persists.