The mighty Tevere was once an unruly torrent that for centuries made life in Roma a malarial death trap. Long ago, Garibaldi, the great unifier tamed the river and life in the metroplis thrived. Today, there's a bike path that runs alongside this wet beast. Word of caution: do not take the path on the first nice day of the year. Mountain snow melt turns the river into a muddy mess, silting up the bike paths with a tire-popping substance. Garibaldi never finished the job!