[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2008/POLITICS/07/26/obama.london/art.obama.brown.ap.jpg caption="UK PM Gordon Brown with U.S. presidential candidate Barack Obama in London Saturday."]
LONDON, England (CNN) - U.S. Democratic presidential candidate Barack Obama met with British Prime Gordon Brown Saturday on the last leg of his weeklong overseas tour.
The two discussed foreign policy issues and the "special relationship" between Britain and America during two hours of talks inside 10 Downing Street, the prime minister's London residence.
The pair made the most of the sunshine by sitting outside on the patio, even taking a stroll toward adjacent St. James's Park - much to the surprise of nearby tourists.
Watch: Obama visits London
"The prime minister's emphasis, like mine, is on how we can strengthen the transatlantic relationship to solve problems that can't be solved by any single country individually," Obama told reporters outside Downing Street after the meeting.
Those problems, Obama said, include climate change, international terrorism and turmoil in world financial markets. Obama and Brown also discussed cooperation in resolving the problems in the Middle East and burden-sharing in Iraq and Afghanistan.
"It was a spectacular day and I'm glad to be here," Obama said.
Earlier, Obama met with former British Prime Minister Tony Blair, who now serves as the Middle East envoy for the "quartet" of the United States, the European Union, Russia, and the United Nations.