With more than 200 pavilions on a 5.28-square-kilometer site along both sides of the Huangpu River, Expo 2010 Shanghai can be overwhelming. These six pavilions stand out for their creativity, sincerity, or simply novelty – and they have shorter lines, too.

Serbia

The Serbia Pavilion (JENNIFER JETT)

The theme of the Serbia Pavilion is "Better City, Better Life, Better Time." In 1923, Serbian scientist Milutin Milankovic created the most precise calendar in history. A calendar year falls slightly behind a solar year. While the Julian calendar loses 11 minutes per year, and the current Gregorian calendar loses 26.75 seconds per year, Milankovic's calendar loses only 2 seconds per year. In a film shown in the center of the pavilion, Serbians discuss what 2 seconds means in their lives. Serbia hopes that one day Milankovic's calendar will be adopted worldwide.

Chile

Exhibit inside the Chile Pavilion (JENNIFER JETT)

The Chile Pavilion is all about human connection. Each point on an interactive map brings up a still shot of a Chilean from that part of the country, holding up his or her palm. Pressing your palm against theirs on the screen activates a short film in which the Chilean turns around and walks back into his life, whether it's on a windswept beach or wading through a herd of sheep.

The pavilion also highlights the fact that Xi'an and Santiago, the Chilean capital, are on almost exactly opposite sides of the Earth. Through a "well" in the pavilion floor that connects to a camera in Santiago, Expo visitors can flash messages to people on the other side of the world.