Ireland, County Laois, Timahoe Round Tower.

Ireland, County Laois, Timahoe Round Tower partly framed by a wall of a monastic ruin with a former Church of Ireland church which is now a heritage centre.

Ireland, County Laois, Timahoe Round Tower partly framed by a wall of a monastic ruin with a former Church of Ireland church which is now a heritage centre.

Ireland, County Laois, Timahoe Round Tower partly framed by a wall of a monastic ruin with a former Church of Ireland church which is now a heritage centre.

Ireland, County Wicklow, Glendalough Monastic site, The Round Tower emerging from amidst autumn foliage.

Ireland, County Wicklow, Glendalough Monastic site, The Round Tower.

Estonia, Tallinn, Towers in the Old Town.

Italy, Puglia, Bari, Trullo Sovrano, Piazza Sacramento, Alberobello.

Italy, Puglia, Bari, Trullo Sovrano, Piazza Sacramento, Alberobello.

Italy, Puglia, Bari, Conical dry stone rooves of trulli houses, Rione Monti, Alberobello.

Italy, Puglia, Bari, Panoramic view of trulli houses, Alberobello.

Italy, Puglia, Bari, Trullo Sovrano, Piazza Sacramento, Alberobello.