The local government of Siena have always been a progressive bunch. My favorite thing of theirs is the series of Urban Trekking Guided Walks
that they have put online for visitors to Siena. One is for kids,
called Trekking for Young Explorers and written in language to appeal to
children, it encourages young walkers to take photos, to draw what they
see along the way, to count steps and so on, as well as introducing
history as stories and adventures from the past. Others are aimed at
adults and take similar paths but in more sophisticated language.