Qatar, Fuhairat, Ancient rock engravings of tribal sign.

Germany, Bavaria, Nuremberg, Albrecht Durer Haus, Home of the German Renaissance artist with city ramparts behind.

Germany, Bavaria, Nuremberg, Albrecht Durer Monument in Albrecht Durer Platz.

India, Tamil Nadu, Madurai, A tinker engraving a brass pot in his workshop in Madurai.

India, Tamil Nadu, Madurai, A tinker engraving a brass sheet in his workshop in Madurai.

India, Tamil Nadu, Madurai, A tinker engraving a brass sheet in his workshop in Madurai.

Spain, Andalucia, Seville, Engraving on the arch to Door of the Bells depicting Christ's entry into Jerusalem on a donkey of Seville Cathedral.

Spain, Andalucia, Seville, Engraving on the facade of the Ayuntamiento Town Hall.

USA, New York City, Manhattan, New York Fire Department Memorial Wall, Engine 10, Ladder 10, World Trade Center.

USA, New York City, Manhattan, One of the two waterfalls at National September 11 Memorial, World Trade Center.

USA, New York City, Manhattan, One of the two waterfalls at National September 11 Memorial, World Trade Center.

USA, New York City, Manhattan, Four World Trade Center also known as Tower 4 and 150 Greenwich Street.