"Our Valentine's Day sales make up 20 percent of our entire sales, " said Gae-ra Lee, public relations representative for the cafe.

CNN: In South Korea, Valentine's Day is all about the men

Lee Kun-Hee's wife, Ra Hee Hong Lee, has been the museum's director-general since it opened.

FORBES: Art and Seoul

Zhang and Yang Wei won 7-15 15-4 15-8 but China were denied a medal sweep by Ra Kyung-min and Lee Kyung-won of South Korea, who beat China's Zhao Tingting and Wei Yili 10-15 15-9 15-7 in the bronze medal match.

CNN: Britain, U.S. share sailing medals