Video shared on social media shows fires in the streets of the Iranian capital amid protests.
Feras Killani grew up in Yarmouk in Damascus, which saw brutal fighting between rebel and government forces.
Orla Guerin visits Al-Sina prison in north-eastern Syria, where many suspected fighters have been held for years.
Sharaa led the rebel offensive that toppled the Assad regime in Syria less than two weeks ago.
The BBC's Hugo Bachega sees Syrians dancing, waving flags and making peace signs in Aleppo.
The BBC's Lina Sinjab says there is a joyous mood in the Syrian capital, as people mark the end of the Assad regime.
The BBC's international editor returns to Bashar al-Assad's presidential palace, where he interviewed him in 2015.
The BBC sees a crowd surge in Damascus as rumours spread that a hated Assad henchman is about to be executed.
Video shows Syrian rebel fighters gather around the burning tomb of the late president Hafez al-Assad.
Some Syrians are hopeful that loved ones detained under the Assad regime may still be alive.
Footage shows the Mansaa border crossing between Lebanon and Syria after rebel groups seized Damascus on Sunday.
Lina Sinjab in Damascus says people find it hard to believe that 54 years of the Assad dynasty have ended.
The video, authenticated by AP news, purports to show rebels freeing dozens of inmates.
A Syrian herself, Lina Sinjab says this is the first time she's entered the country "without fear of detention".
BBC Middle East correspondent Lina Sinjab describes chaotic scenes in the Syrian capital.
Rebel fighters and members of the public have gathered in Damascus to celebrate the end of President Assad's regime.
Syrians enter an Assad residence in the capital city after the fall of the president.
After years in power, Syria's President Bashar al-Assad was toppled with surprising speed.
The BBC's Barbara Plett-Usher says everyone in the Syrian capital is "waiting to see what will happen next".
Rebel forces say they have captured Damascus and that President Assad has fled the Syrian capital.
Protesters tear down a statue of President Bashar al- Assad's father, the former president Hafez al-Assad, in a suburb of Damascus.
