Spain, Castile and Leon, Avila, Avila Cathedral, statue of Santa Teresa de Avila.

Spain, Castile and Leon, Avila, Avila Cathedral tower viewed from the walkway along the interior perimeter of the city walls that were built from 1090 onwards and are among the best-preserved and most...

Spain, Castile and Leon, Avila, City walls with the circular Avila Cathedral built into the walls that were built from 1090 onwards and are among the best-preserved and most complete in Europe.

Germany, Bavaria, Wurzburg, View from the Festung Marienberg Fortress showing the Alstadt or Old Town with the Town Hall Neumunster and Cathedral of St Kilian prominent.

Austria, Salzburg, Vista of the city centre area as far as the Festung Hohensalzburg Fortress from the Kapuzinerberg Viewpoint.

Austria, Salzburg, Vista of the city centre area as far as the Festung Hohensalzburg Fortress from the Kapuzinerberg Viewpoint.

Austria, Salzburg, Vista of the city centre area as far as the Festung Hohensalzburg Fortress from the Kapuzinerberg Viewpoint.

Austria, Salzburg, Vista of the city centre area as far as the Festung Hohensalzburg Fortress from the Kapuzinerberg Viewpoint.

Austria, Salzburg, General view of the city and river Salzach from the Festung Hohensalzburg Fortress above the city with hills in the background.