windowOn the ninth floor of 100 Broadway, across from Trinity Church, office workers looked out their windows as the Giants parade passed by. (Photo: Fred R. Conrad/The New York Times)

Updated, 3:55 p.m. | The weather forecast said showers in New York on Tuesday, but the Giants got deluged in paper, cheers and virtual hugs instead.

Tons of confetti and toilet paper rained down on the team as it rode north on Broadway through the Canyon of Heroes with the Super Bowl trophy it claimed by upsetting the New England Patriots on Sunday in Super Bowl XLII.

For a few hours, the corner of Broadway and Wall Street, the symbolic center of the financial world, turned into party central for legions of football fans celebrating the city’s first sports championship since 2000.

“I’ve been to Mardi Gras, New Year’s Eve in Times Square and Carnivale in Rio, and this beats them all,” said Lori Pletenik, who flew back on Monday night from Arizona, where she had gone to see the game.

The crowd was good-natured and was filled with teenagers, many of whom were in diapers when Giants last won the Super Bowl, in 1991, although the police did report some arrests for disorderly conduct. The fans were in such a good mood that they even cheered the sanitation trucks that drove up Broadway (with their snow plows down), chanting, “clean those streets” as they passed.

At 11 a.m., when the parade was set to begin, a man in a white robe and yellow cape emerged from Trinity Church, climbed a ladder and hoisted a Giants poster. The bells of the church rang out. The crowd bounced in anticipation, waiting for Eli Manning, Antonio Pierce and the rest of the team to glide by.

The first to arrive were the police motorcycles, then Gov. Eliot Spitzer in a red convertible (with a New Jersey license plate), then a bagpipe and drum corps. Drivers in the parade honked their horns. The fans responded with horns of their own.

Fans on both sides of Broadway tossed rolls of toilet paper back and forth, mixed in with “Let’s go, Giants!” cheers and chants of “18 and 1,” an allusion to the Patriots and their near-perfect season.

Finally, the players arrived, a few to a float. Brandon Jacobs. Plaxico Burress. Amani Toomer. Then the fourth float: Eli Manning, Michael Strahan, Coach Tom Coughlin, Mayor Michael Bloomberg and team owner John Mara, all of whom took turns hoisting the Super Bowl trophy.

The crowd hit full roar near 120 Broadway, roughly midway through the route, which started at Bowling Green and ended at Chambers Street. Office workers in newer buildings pressed against windows that did not open. Others tossed bales of confetti out of those that did. Strahan, who many thought would retire before the season began, jumped up and down on the truck in glee.

The rousing City Hall celebration for the victorious Giants ended around 1:50 p.m. after the team’s quarterback and the Super Bowl’s most valuable player, Eli Manning, gave a rousing address to the assembled fans, steps away from Mayor Michael R. Bloomberg, who presided over the city’s first ticker-tape parade since 2000 — and the first such parade of the Bloomberg administration.

“On behalf of the team, I just want to tell you all how proud we are to be able to bring a championship back to New York City,” Mr. Manning told the cheering fans. “I believe that we play football for the greatest city in the world, and all of you all deserve to have the greatest football team in the world. It’s been an honor to play with this group of guys, who have such character, such closeness amongst us, coaches who prepare us for every game. We’ve had our ups, we’ve had our downs, but everything we’ve gone through this season has made it so special.”

The City Hall ceremony — at which members of the Giants were each presented with the key to the city — ended a three-hour celebration of New York’s first Super Bowl championship since 1991.

Throughout the morning, thousands of excited fans crowded the sidewalks along Broadway. The ticker-tape parade made its way up Broadway from Battery Park toward Chambers Street, starting at 11 a.m.

George Wendt (not the actor) and his two sons — Brandon, 12, and Tyler, 11 — came to Lower Manhattan from Jersey City this morning to watch New York City’s first ticker-tape parade since 2000: a celebration of the Giants’ upset of the New England Patriots in Super Bowl XLII. The Wendt family members were all decked out in Giants’ T-shirts bearing the numbers “18-1″ — an allusion to the Patriots, who were on their way to a perfect season before encountering the Giants at the Super Bowl.

Mr. Wendt is a lifelong Giants fan. His son Tyler is a Patriots fan, but he wore an Eli Manning jersey for the occasion. (Perhaps his father had expressed concern for his younger son’s personal safety.) The two boys took the day off from school. After the parade, the Wendt familiy planned to take the PATH commuter train back to Exchange Place in Jersey City — where Mr. Wendt’s wife will pick up her husband and sons and drive them out to East Rutherford, N.J., for an afternoon celebration of the Giants at the Meadowlands.

Asked if it was hard to keep his boys home from school, Mr. Wendt replied, “School’s open, but how often is this going to happen?”

The crowd was pretty good-natured and was filled with teenagers, many of whom were in diapers when Giants last won the Super Bowl, in 1991. For example, Michael Miele, 19, left her home in Washington, N.J., at 4:30 a.m.

Parade aerial viewBuses traveled down Broadway in front of Trinity Church, at Wall Street, as crowds gathered in advance of the ticker-tape parade for the Giants. (Photo: Fred R. Conrad/The New York Times)

Fans on both sides of Broadway tossed rolls of toilet paper back and forth, mixed in with “Let’s go, Giants!” cheers and also cheers of “18 and 1.” Vendors sold Giants T-shirts for $10.

The fans were in such a good mood that they were even cheering the sanitation trucks that drove down Broadway in preparation for the parade.

Earlier in the morning, on a No. 1 subway headed south toward Rector Street at 7:30 a.m., the atmosphere was half fraternity house and half train load of weary commuters. As workers headed for Wall Street, dozed, or read newspapers, teenagers wearing Giants jackets and plastic helmets listened to hip-hop music and screamed “18 and 1.”

The teenagers screamed support when other teenagers in Giants paraphernalia boarded the train, a middle-aged man pointed at a compact-disc player belonging to one of the teenagers and looked as if he was going to say something disapproving. Instead, he asked, “Can it play ‘New York, New York?’ You know, Sinatra?” Everyone in the train laughed.

The facade of City Hall, a neoclassical edifice built in 1811, was draped with blue bunting and banners emblazoned with the Giants’ logo. Workers raised tall lights that were pointed at a stage with a lectern set up on the steps of City Hall. A raucous, jubilant crowd thronged Broadway, just west of City Hall, holding up signs. Passing trucks and buses sounded their horns and the crowd roared in response. Shortly before 9 a.m., some fans were permitted to enter through the tall iron fence that rings City Hall, many wearing Giants jerseys or T-shirts commemorating the Super Bowl triumph.

Among them was Justin O’Donovan, 25, a landscaper who lives Suffolk County. He said he had been standing on Broadway when he was handed a pass and beckoned through a gate by a city official. Mr. O’Donovan said he was thrilled to get a chance to attend such a celebration, with Mayor Michael R. Bloomberg as the host of the event. “This is the best sporting event of my life so far,” Mr. O’Donovan said. “The Giants are a New York team. I don’t care if they play 10 miles into Jersey.”

Colin Moynihan and Anthony Ramirez contributed reporting.