Hoare thinks them coeval with the Round Towers, about the 9th or 10th century.
It is remarkable, that the traditions of all the people in the neighbourhood of the round towers in Ireland, agree in stating that they were built in the same manner.
Some external defences are now, however, in a state of ruin; and there are only the remains of a tower, that once arose between the two round towers, and was apparently much more elevated than they.
There still exist some scores of round towers in a more or less perfect state; and they are scattered all over Ireland, being situated for the most part in remote and not easily accessible places.
Hence the pyramids of Egypt, the pagodas of India, and the round towers of Ireland had both a religious and a scientific purpose.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "round towers" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.