London's Tower Bridge unveils glass-bottom floor

London's Tower Bridge has unveiled a new glass-bottom walkway that gives visitors a skyhigh perspective of the city's iconic double-decker red buses, pedestrians and boats from right under their feet.

Measuring 11 metres long and nearly 2 metres wide, the glass floor stretches across the West Walkway, 42 metres above the Thames River. Each glass panel weighs 530 kg.

The walkway also offers panoramic views of the city for those who may suffer from vertigo. A second glass bottom floor is also slated to open in the East Walkway on December 1.

The newest addition to the Tower Bridge — the first major structural development since the 1980s — follows on the heels of other international landmarks and sites including the Eiffel Tower in Paris, the CN Tower in Toronto and the Grand Canyon, which already offer glass-bottom views.