The deaths of the 96 people aboard the plane has been especially painful for Poles because they were on their way to commemorate the 70th anniversary of the Katyn massacre - when 22,000 Polish officers were murdered by the Soviet secret police considered one of the greatest tragedies in Polish history.
Kaczynski had long fought for recognition of the Katyn murders by Russia, this year Prime Minister Vladimir Putin attended the annual memorial, a sign that perhaps Russia-Poland relations are on the mend.
"Maybe this is something bigger than just him as a president," said Warsaw resident Anna Zaganska. "If he died in a normal situation I don't think he would be buried in Wawel."
" For Polish people the memory of Katyn is really unforgettable. In the next century, the next generation will be taught about this at Kaczynski's grave, so maybe it's a good decision," Zagansk added.
On a cold and overcast Wednesday, there were reports that the line snaking out of the presidential palace to see the Kaczynskis' lying in state was up to eight hours long. Mourners will be able to pay their respects around the clock until this weekend and the official period of mourning has been extended until Sunday night.