Christof Stache / AFP - Getty Images

Herzogstand cable car mechanics inspect parts of the lift during the annual safety revision in front of the small village Walchensee, southern Germany on Nov. 21.

Herzogstand cable car mechanics inspect parts of the lift during the annual safety revision above the small village Walchensee, southern Germany on Nov. 21. The inspection continues until Dec. 21. The cable car begins around 2,600 feet above sea level at the small village of Walchensee and ends in Fahrenberg around 5,300 feet. Cable cars are prepared for the upcoming skiing season all over the Bavarian mountains.

Christof Stache / AFP - Getty Images

Herzogstand cable car mechanics inspect parts of the lift during the annual safety revision in front of the small village Walchensee, southern Germany on Nov. 21.

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Dan Kitwood / Getty Images

Cable cars pass over the River Thames on May 16, 2012 in London, England.

Engineers have been testing a new cable car system crossing the River Thames, Getty Images reports. The gondola-style cable cars will carry commuters between the Greenwich Peninsula and East London. 

The system, which is estimated to be costing nearly £60 million ($95 million), is expected to open to the public this year but doubts have been raised over whether it will be ready in time for the opening of the Olympic Games on July 27.

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Lefteris Pitarakis / AP

The 1 km (0.62 mile) cable car line crosses the river from the Greenwich Peninsula to the Royal Docks, linking two important Olympic sites. Up to 34 gondolas, each carrying a maximum of 10 passengers, will transport people across the river.