An image taken from Avignon, France, showing a window.

There can be no serious discussion about Avignon without mentioning the celebrated Popes' Palace, which has been listed as a UNESCO World Heritage Site. With the historic palace's colossal size, looming over the town like a giant, it's perhaps no surprise that this is the largest gothic palace in the world, given its sweeping dimensions. While Avignon has largely been associated with its period as a papal capital in the 14th century, and its even older bridge from the 12th century, it has plenty to offer beyond its historical legacy.