Spain, Castile and Leon, Avila, Puerta del Alcazar or Gate of the Fortress is a monumental gate with very strong turrets flanking the entrance, it is part of the city walls that were built from 1090 o...

Spain, Castile and Leon, Avila, Puerta del Alcazar or Gate of the Fortress is a monumental gate with very strong turrets flanking the entrance, it is part of the city walls that were built from 1090 o...

Spain, Castile and Leon, Avila, The Puerta de San Vicente or Gate of St Vincent is a monumental gate with very strong turrets flanking the entrance, it is part of the city walls that were built from 1...

Spain, Castile and Leon, Avila, The Puerta de San Vicente or Gate of St Vincent is a monumental gate with very strong turrets flanking the entrance, it is part of the city walls that were built from 1...

Spain, Castile and Leon, Avila, The Puerta de San Vicente or Gate of St Vincent is a monumental gate with very strong turrets flanking the entrance, it is part of the city walls that were built from 1...

Spain, Castile and Leon, Avila, The Puerta de San Vicente or Gate of St Vincent is a monumental gate with very strong turrets flanking the entrance, it is part of the city walls that were built from 1...

Spain, Castile and Leon, Avila, The Puerta de San Vicente or Gate of St Vincent is a monumental gate with very strong turrets flanking the entrance, it is part of the city walls that were built from 1...

Spain, Castile and Leon, Segovia, 12th century Alcazar of Segovia with a view of some of the turrets on the 15th century Tower of John 2nd of Castile seen from the Plaza de la Reina Victoria in front...

England, London, Tower of London, White Tower from outside the walls.

England, London, Tower Bridge, The West Gate and west wing of the building.

England, London, The Tower of London and River Thames seen from the viewing deck on the Shard known as the View from the Shard.

England, London, Tower Bridge and the River Thames seen from the viewing deck on the Shard known as the View from the Shard.