The Karim Khan Castle, panel of tiles above the entrance to the citadel, Rostam killing the white demon, Shiraz, Iran, Middle East

Modern architecture, Clarion Hotel, Trondheim, Norway, Scandinavia, Europe

Energy efficient CIEMAT building research at Solar energy research establishment near Tabernas, Almeria, Andalusia, Spain, Europe

A residential street in the old town with traditional wrought iron balconies, blue and white tiled panels on the outside walls, washing hanging in the sun, Oporto, Portiugal, Europe

Detail of modern administrative building Main Point Karlin, Karlin, Prague, Czech Republic (Czechia), Europe

Modern administrative building Main Point Karlin, Karlin, Prague, Czech Republic (Czechia), Europe

Close-up of the Cuban flag, Havana, Cuba

Traditional door, Ile De Re, France.

A light-filled elementary classroom. A white ceiling reflects light from the windows above. Traditional building methods and materials, such as the poplar and willow ceilings are combined with modern solar and passive solar technology. Druk Padma Karpo Institute. Shey, Ladakh, India

A light-filled elementary classroom. A white ceiling reflects light from the windows above. Traditional building methods and materials, such as the poplar and willow ceilings are combined with modern solar and passive solar technology. Druk Padma Karpo Institute. Shey, Ladakh, India

A light-filled elementary classroom. A white ceiling reflects light from the windows above. Traditional building methods and materials, such as the poplar and willow ceilings are combined with modern solar and passive solar technology. Druk Padma Karpo Institute. Shey, Ladakh, India

Winetasting - smelling the flavour of white wine

Great Ocean Road, Castle Cove, Southern Ocean, Victoria, Australia

Aids HIV information in the african village Mukuni, Southern Province, Republic of Zambia, Africa

Close-up of a life belt

Florence Cathedral, formally the Cattedrale di Santa Maria del Fiore (in English Cathedral of Saint Mary of the Flower) is the cathedral of Florence, Italy, or Il Duomo di Firenze, in Italian. It was begun in 1296 in the Gothic style to a design of Arnolfo di Cambio and was structurally completed by 1436, with the dome designed by Filippo Brunelleschi. The exterior of the basilica is faced with polychrome marble panels in various shades of green and pink, bordered by white, and has an elaborate 19th-century Gothic Revival facade by Emilio De Fabris.

Man crouching on harbor and setting up solar panel to recharge battery, Washego, Ontario, Canada

A bride in a fitted bodice, white dress with lacings across the fitted back panels, Bridal gown, Varese, Italy

Two solar panels on sky background

low angle view of solar panel