The Titlis Cliff Walk in the Swiss Alps took five months to build and is thought to be Europe's highest suspension bridge, at a stomach-turning 9,800ft (3,000m) above sea level.
BEVERLY HILLS, CA - FEBRUARY 15: Actor Mel Gibson attends the 59th Annual ACE Eddie Awards at the Beverly Hilton Hotel on February 15, 2009 in Beverly Hills, California (Photo by Frederick M. Brown/Getty Images)
The Safe House by KWK PROMES is located in a small village on the outskirts of Warsaw, Poland. Surrounding the area, many of the buildings are “Polish cubes” from the 60s and old wooden barns. The house was designed so that the homeowners never feel unsafe or exposed. The result is something of a modern fortress with lots of movable parts and secret openings, complete with a working drawbridge.