# Second Arab Siege of Constantinople (717)

URL: https://roman-history.com/timeline/717-second-arab-siege-of-constantinople
Location: Constantinople
Categories: main-event

The city survived a major Umayyad land and sea assault aided by fortifications, naval power, and harsh conditions.

## Why it matters
The victory secured the empire during its seventh- and eighth-century transformation.

Ruler at the time: [Leo III](https://roman-history.com/rulers/leo-iii)