In honor of the UN"s World Bicycle Day, we"re at Triglav National Park in Slovenia, with a bird"s-eye view of riders crossing this dubious-looking wooden suspension bridge over the blue glacial water of the river called Soča. Protecting some of the most magnificent mountain landscapes of the Julian Alps, Triglav is the country"s only national park, but it"s a stunner. Running along Slovenia"s northwestern border with Italy, Triglav was first protected as a "conservation park" in 1924, then made a national park in 1981. The park gets its name from the mountain at its heart, Triglav, long considered a symbol of Slovenia and of Slovene identity.