Approximately 5.8 million homes and businesses across Florida and Georgia have lost power.
Sebastian Murdock, a reporter at HuffPost, tweeted this photo from his hotel in Miramar:
Photographer Sarah Heddon also captured a video of the scene in downtown Jacksonville.
Water from the St. Johns river overflowed near Jacksonville's St. Vincent's Medical Center.
Local WJAX-TV reporter Paige Kelton tweeted this video:
Flooding in Jacksonville reached a 53-year high.
Floods reached 60.4 inches there Monday morning, surpassing the record set by Hurricane Dora in 1964.
Christopher Hong, a reporter for The Florida Times-Union, tweeted this video of downtown Jacksonville on Monday morning.
next slide will load in 15 secondsSkip AdSkip AdSand from Fort Lauderdale Beach swept onto the nearby boulevard.
The siding of a DoubleTree hotel in Orlando was ripped out.
Thomas von Grünigen, a correspondent for Swiss Public Broadcasting, tweeted these photos of the DoubleTree Hotel Orlando Airport on Monday morning.
The storm assaulted this gas station in North Redington Beach.
The Miami-Dade police tweeted this video showing power lines, trees, and signs strewn across a road:
This felled tree in a condo community in Kissimmee narrowly missed hitting a home.
next slide will load in 15 secondsSkip AdSkip AdTrees were uprooted as well.
The winds and floodwaters were strong enough to topple this large truck in Miami.
In other parts of the city, entire vehicles were overturned by the gusty winds.
The worst of the storm was seen on Sunday, when Floridians had to wade through flooded streets, like this one in downtown Miami.
Some homes were almost completely smashed, like this one in Tampa.
next slide will load in 15 secondsSkip AdSkip AdIn North Port, police officers tried to salvage a car that had been swallowed by the storm.
The destruction was felt in a handful of cities. In Tampa, a man walked past an uprooted tree along Bayshore Boulevard as threatening clouds continued to loom overhead.
On the oceanfront A1A state road in Boca Raton, a police cruiser secured a fallen power pole.
All kinds of property was crushed in Irma's powerful grip.
In Daytona Beach, a man waded into a flooded residential street.
next slide will load in 15 secondsSkip AdSkip AdIrma's roaring winds also brought down power lines, like the one shown here in front of an oceanfront condo building in Boca Raton.
Elsewhere, residents of flooded suburbs had to flee. In Orlando, Army National Guard Spc. Thomas Hogan rescued a dog from a submerged neighborhood.
Cars and boats were also damaged. Jorge Gonzalez, Esteves' neighbor in Naples, walked by his vehicle on Monday after his home was badly battered.
Maida Esteves, one of the residents of the mobile home park, stood in what was once her living room on Monday after Irma destroyed her home.
Homes were destroyed, power lines were toppled, and cars were sunk by Irma's raging winds and torrential rains. A mobile housing park in Naples, Florida, was nearly razed to the ground.
next slide will load in 15 secondsSkip AdSkip AdStreets flooded all along the coast and in North Miami, forcing people to flee their homes with garbage bags.
Some 6.3 million people in Florida were ordered to evacuate before Irma made landfall, according to the Florida Division of Emergency Management. With winds of up to 70 mph, the storm overturned boats, like this one seen in Biscayne, Florida on Monday.