Tim Laman / A traditional style house or 'honai' on the mountainside overlooking the Baliem Valley, Papua, Indonesia, Island of New Guinea. June 2010

Robin Chittenden / Hooded crow (Corvus cornix) on rooftop. Cyprus. April.

Sven Zacek / Tallinn old town, UNESCO World Heritage Site, in evening light. Harjumaa, Estonia. May 2011.

Ashley Cooper / Houses in Almere with solar PV panels on the roof. It is the Netherlands youngest town, in Flevoland, which was reclaimed from the sea. This planned city is very green, with space heating provided fro...

Ashley Cooper / Sun Island in Almere, which is the Netherlands youngest town, in Flevoland, which was reclaimed from the sea. This planned city is very green, with space heating provided from a nearby combined heat a...

Ashley Cooper / Sun Island in Almere, which is the Netherlands youngest town, in Flevoland, which was reclaimed from the sea. This planned city is very green, with space heating provided from a nearby combined heat a...

Ashley Cooper / Newly refurbished Kings Cross railway Station, London, England, UK. April.

Juan Carlos Munoz / Vineyard in autumn, Ysios Winery with building designed by Santiago Calatrava, La Rioja, Sierra De Cantabria, Alava, Basque Country, Spain. November 2017.

Nick Upton / Six nest boxes for Common swifts (Apus apus) in a roof space with swift brick entrance holes and perspex backs so nesting birds can be monitored by a cctv camera and a call playback system, with one n...

Nick Upton / Swift nestbox on a house wall alongside hollow "swift brick" entrances to nest boxes in a roof space, Worlington, Suffolk, UK, July.

Merryn Thomas / Quito, formally San Francisco de Quito, is the capital city of Ecuador. November 2013.

Gary K. Smith / Santa Maria Della Presentazione church, Zitelle on Giudecca island, Venice, Italy.