London's Tower Bridge is a combined bascule and suspension bridge spanning the River Thames. Its primary functions are:
The bascule leaves can be raised to 86°, providing 290 ft (88 m) of clearance for tall ships to reach the Pool of London.
Two roadways (two lanes each) and high‑level walkways carry vehicles and foot traffic across the river.
Its Gothic Revival towers and Victorian engineering make it an iconic symbol of London.
Millions visit annually for tours, exhibitions, and panoramic views from the walkways.
Tourism revenue, promotional value, and its role in city branding contribute significantly to London's economy.