In 2014, glass floors were installed in the walkways, giving visitors another, unusual view from the bridge. The long glass floors, more than 40 meters above the river, allow you to (8)__ the traffic over the Tower Bridge from above.

It is particularly fascinating to see the bridge (10)___ and close below your feet.

It is particularly (9)___ to see the bridge (10)___ and close below your feet.

Taking photographs of the Tower Bridge is a favorite London tourist activity, but you can also go inside the bridge, where you'll have a magnificent view over London from the walkway (7)____ the two bridge towers.

Taking photographs of the Tower Bridge is a favorite London tourist activity, but you can also go inside the bridge, (6)_____ you'll have a magnificent view over ..

(5)_____ photographs of the Tower Bridge is a favorite London tourist activity, ...

Over time, the bridge has become one of London's most famous (4)___.