Fortifications of London

Statue of the Emperor Trajan in front of a section of the London Wall at Tower Hill. The wall's lower Roman section can be identified by its bands of clay tiles.

The fortifications of London are extensive and mostly well maintained, though many of the City of London's fortifications and defences were dismantled in the 17th and 18th century. Many of those that remain are tourist attractions, most notably the Tower of London.