July 20 (Bloomberg) -- Democratic presidential candidate Barack Obama will deliver a speech from Berlin's Tiergarten Park this week after German Chancellor Angela Merkel expressed reservations about him speaking at the Brandenburg Gate.

Obama will deliver a July 24 speech in front of Tiergarten Park's Victory Column, a 19th century structure capped by a gilded angel, his campaign said in a statement today. His remarks will focus on the ``historic'' partnership between the U.S. and Germany.

Berlin's Brandenburg Gate symbolizes the division of Germany during the Cold War and its reunification. It was the site where former U.S. President Ronald Reagan in 1987 called on Soviet leader Mikhail Gorbachev to tear down the Berlin Wall.

Obama, a U.S. senator from Illinois, cancelled plans to speak before the Brandenburg Gate because he determined it would be ``too presumptuous,'' Denis McDonough, the presidential candidate's foreign policy aide, said July 18.

Obama, 46, met with Afghan President Hamid Karzai today in Kabul and is in the midst of a six-day international tour that will take him to Iraq, Israel and Europe. The trip may help Obama dispel concerns that he lacks foreign-policy experience.

Voters, by more than a 2 to 1 margin, said presumptive Republican nominee John McCain has more knowledge of the world than Obama, according to a recent ABC News-Washington Post poll.

The survey, taken July 10 through July 13, also found that 72 percent of those polled said McCain, 71, knows enough about world affairs to be president. Fifty-six percent said the same about Obama.

To contact the reporter on this story: Jesse Westbrook in Washington at jwestbrook1@bloomberg.net.

Last Updated: July 20, 2008 10:56 EDT