Photograph shows a bridge-tunnel system passing underwater between Sweden and Denmark.
Photographs show palatial home of Sheikh Zayed bin Sultan Al Nahyan.
Photograph shows a panoramic view of a long, tall bridge spanning a valley.
Photograph shows a water-channel bridge in Germany.
Illustrations show a proposed Grand Canyon skywalk.
Photographs show golfer Tiger Woods' beachfront home.
Photographs show an indoor skiing facility in the desert city of Dubai.
Photographs show an undersea restaurant.
Photographs show a high-rise construction site flooded by waters from a nearby marina.
Photographs show a collection of houses built in unusual places.
Photograph shows a "redneck mansion" composed of several linked trailers.
Photographs show a new prison facility in Chicago, Illinois.
Photographs show a mansion belonging to Filipino senator Manny Villar.
Photographs show a collection of guns kept in the basement of actor Charlton Heston's home.
Photographs show the world's largest swimming pool.
Photographs show amenities provided to employees at the offices of Google.
Photographs show the figure of an astronaut carved into the wall of a
Photographs show a dwelling made from an airplane.
Photograph shows Detroit slums with downtown skyscrapers in the background.
Photograph shows a library facade lined with giant-sized representations of books.
Photograph shows a circular bridge.
Images show a solar tower to be built in Rio de Janeiro in conjunction with the 2016 Olympic Games.
Photographs show arch in Nagasaki which withstood an atomic bomb and an earthquake/tsunami.
Photographs show an area in Japan rebuilt a year after the 2011 earthquake/tsunami.
Photograph shows a half toilet in the Olympic city of Sochi, Russia.
Photograph shows a house on top of a very skinny rock formation.
Photograph shows the roller coaster-like Eshima Ohashi bridge in Japan.