Over 40 warships took part in the naval parade along the Neva River in St Petersburg.
The annual Scarlet Sails festival takes place in honour of Russian school graduates but without spectators due to coronavirus restrictions.
Russia's president, 20 years since he came to power, is still a lucrative business for some.
The collapse happened during work to reconstruct the St Petersburg stadium
15 people were killed and more than 50 others wounded when a suicide bomber detonated a device on a subway train in April 2017.
A renowned Russian historian has admitted to killing a former student, after he was pulled from a river by police and found with a backpack containing two arms.
President Putin is tripling spending on digitising more areas of the economy to revive Russia's economic fortunes.
Taking a dip in icy water or sunbathing with temperatures around zero is something most people would attribute to daredevils and professionals, but for the people of St Petersburg, it is a pastime.
Day 1 at the World Judo Masters in St. Petersburg, Russia and the man of the day was reigning World Champion Hashimoto Soichi of Japan
Police have detained more than 200 opposition activists for taking part in a wave of anti-Kremlin protests across Russia in support of jailed opposition leader Alexei Navalny.
A fire at St Petersburg's Hermitage museum has harmed one of its oldest collections - its resident cats.
Lars Stindl scored the winning goal in a bad-tempered final in St Petersburg
FIFA expresses delight at Russia's readiness for World Cup
Kremlin leader Vladimir Putin was put on the spot on Friday over alleged Russian hacking of the US presidential election.
Putin was grilled at the
Protesters in Moscow, Saint Petersburg and other cities say they're "sick" of their president.
A group called the Imam Shamil Battalion has claimed responsibility for a metro bombing in the Russian city of St. Petersburg that killed 16 people.
Thursday was the third and last day of national mourning for the victims of Monday's attack.
Authorities in St Petersburg say they have detained several suspects and made an explosive device safe inside an apartment block in the city.