- I think that only daring speculation can lead us further and not accumulation of facts. Albert Einstein
Walk a Suspension Bridge
Five of the world's most spectacular footbridges.
SkyBridge (Sochi, Russia)
The world's longest pedestrian bridge forms part of Sochi's new SkyPark attraction, which includes the world's highest swing and a 700-meter-long zip wire.
The 439-meter-long bridge has two observation platforms, both offering spectacular views of the Black Sea.
There's also a bungee jumping platform from the center of the structure.
Tigbao Hanging Bridge (Bohol, Philippines)
This structure looks flimsier than it is -- it's actually made of metal, but a bamboo top layer was added to give it an authentic -- or, depending on your perspective, scary -- look.
It hangs 25 meters (82 feet) above the river.
Visitors wanting to do their best Indiana Jones impression can even buy a facsimile hat at a stall on the riverbank.
Capilano Suspension Bridge (Vancouver, Canada)
The Capilano suspension bridge stretches 137 meters (450 feet) across and 70 meters (230 feet) above Vancouver's Capilano River.
It was originally built by Scottish engineer George Grant Mackay in 1889, but was completely rebuilt in 1956.
Today, it's Vancouver's oldest and most popular attraction, receiving more than 700,000 visitors per year.
Trift Bridge (Gadmen, Switzerland)
This Swiss suspension bridge, which can only be accessed via a cable car, hangs above the Trift Glacier and has a length of 170 meters (557 feet).
It was built as a response to global warming -- until recently, the mountaineering hut at the top of the glacier could be reached on foot, but when the glacier started to shrink, the bridge became the only route of access.
The structure is based on traditional Nepalese rope bridges and is the longest and highest in the Alps.
El Caminito Del Rey (Malaga, Spain)
One of many bridges on the El Caminito Del Rey (meaning "the king's little pathway"), this cliff-hugging path in Spain was built to provide workers at the hydroelectric power plants at Chorro Falls and Gaitanejo Falls with a way to cross between them.
It quickly became a tourist attraction, although it's only recently reopened after major renovations.
The entire walkway is just one meter wide and rises to over 100 meters (328 feet) above the river below.