The last ever space shuttle flight proved a hit as Californians reached for their smartphones to record the historic moment.
Endeavour zig-zagged around California where it was born and where it will spend its golden years as a museum showpiece following the end of the shuttle programme.
From the state Capitol to the Golden Gate Bridge to the Hollywood sign, massive crowds of spectators pointed their mobile phones and cameras skyward as the shuttle, riding piggyback on top of a 747 jumbo jet, buzzed past.
"It made the hair on the back of my neck stand up. It was historic, momentous," said Daniel Pifko, who rode his motorcycle to a hilly peninsula north of San Francisco to snap a few pictures of the bridge.
Across California, throngs swarmed rooftops for one last peek of Endeavour airborne. Parents pulled their children out of school. Some became misty-eyed, while others chanted "USA! USA!" as the shuttle soared overhead.
Gina Oberholt screamed for joy when she spotted Endeavour from a scenic overlook in Los Angeles. She felt a bit nostalgic because her uncle had worked as a shuttle technician.
"I've always had a special place in my heart for the shuttle programme," she said.
Known as the baby shuttle, Endeavour replaced Challenger, which exploded during lift-off in 1986. Endeavour rolled off the assembly line in the Mojave Desert in 1991 and a year later, rocketed to space. It left Earth 25 times, logging 123 million miles.
After a nearly five-hour loop that took Endeavour over some of California's most treasured landmarks, it turned for its final approach, coasting down the runway on the south side of the Los Angeles International Airport, where elected officials and VIPs gathered for an arrival ceremony.
As the jumbo jet taxied to the hangar, an American flag popped out of the jet's hatch. Endeavour will stay at the airport for several weeks as crew prepare it for its final mission: a 12-mile trek through city streets to the California Science Centre, its new permanent home, where it will go on display on October 30.