Swimming near Ponte Sant'Angelo in the Tiber River is strongly discouraged due to the river's strong currents, pollution levels, and potential legal issues. Swimming in the Tiber is prohibited, and those caught doing so may face fines ranging from 1,000 to 2,000 euros. To enjoy water activities in Rome, visitors are advised to explore the city's numerous fountains, parks, and public pools, which offer a safer and more refreshing alternative to escape the city's heat.