Hungary, Budapest, Castle Hill, Fishermans Bastion.

Hungary, Budapest, Castle Hill, Fishermans Bastion, Westernmost towers amidst trees and looking towards the western end of the city.

Hungary, Budapest, Castle Hill, Fishermans Bastion.

Hungary, Budapest, Castle Hill, Fishermans Bastion.

Hungary, Budapest, View across the River Danube towards Margaret Island from Castle Hill.

Italy, Emilia Romagna, Bologna, The Due Torri or Two Towers famous for leaning, Asinelli and Garisenda Towers.

Italy, Lombardy, Pizzighettone, 12th Century Torre de Guado.

Italy, Valle d'Aosta, castle towers, Fenis Castle.

Estonia, Tallinn, Pikk Hermann Tower, part of Toompea Castle, and Estonian Parliament building.

Estonia, Tallinn, Pikk Hermann Tower, part of Toompea Castle, and Estonian Parliament building.

Estonia, Tallinn, Towers in the Old Town.

Denmark, Copenhagen, Rosenborg Castle.