An Hoi Bridge in Hoi An is submerged due to rising water levels on the Thu Bon River.
Storm Noru made landfall in Da Nang and its neighbor Quang Nam Province, home to the UNESCO heritage site Hoi An, at 1 a.m. Wednesday, carrying maximum winds of 133 kph.
As of Wednesday afternoon, the storm has devolved into a tropical depression over Laos.
Around 9 a.m. Wednesday, as the rain has stopped and the sky gradually cleared, foreign tourists walk in floodwaters to take pictures while restaurants and food stalls remain closed.
Tourists walk past tree branches felled by strong winds.
Many foreign visitors said they wanted to go out to breathe some fresh air after a day staying in the hotel.
Instead of taking pictures of ancient houses, yellow walls or the typical bougainvillea of Hoi An, visitors capture the aftermath of one of the strongest storms to hit Vietnam in 20 years.
Kim Chaplin from Australia told VnExpress International the situation in Hoi An is "calm."
"There is a huge amount of trees over the road while the power is still out and not to be resumed until later today.
"We have been unable to travel too far in the city as a lot of roads are under water and my tailor is not sure they are able to complete our goods."
Chaplin, who is travelling with her husband and two children, plans to leave Hoi An on Saturday evening and hopes the situation soon gets better so that she can go out and visit some tourist attractions.
The annual flood season in central Vietnam occurs between late October and January, giving foreign tourists a chance to experience the ancient town from a different angle.
Some streets in Hoi An remain submerged under waters but tourists are allowed to go out and tourism activities also resumed after over a day of suspension due to the impacts of Storm Noru.
A group of foreign tourists walk on a lantern-decorated street in Hoi An ancient town after the floodwaters have receded.
Van Kalken Petrus Josephus from Australia said: "I feel comfortable as the air is fresh. I have been to Vietnam many times, but this was the first time to encounter a storm.
"Last night we stayed in the hotel all night. Even though the power was out, the rain and strong wind did not affect the emotions of our group."