Read the following passage and choose the best answer for each blank.

London's Tower Bridge

London's Tower Bridge is one of the most famous (1)__in the world. The bridge, designed (2) ____  the architect Horace Jones together with John Wolfe Barry, was finally completed in 1894. It (3) _______ 11,000 tons of steel to build the framework of the 265-meter-long bridge. Over time, the bridge has become one of London's most famous (4)___.  (5)_____ 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 London from the walkway (7)____ the two bridge towers.

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

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