EUR 2 for the basin area in ticketed hours; 15 min.
Nicola Salvi's 1762 Baroque fountain built onto the back of Palazzo Poli; since Feb 2026 the basin-side area is ticketed, which has thinned the crush at the rim.
3
Sant'Ignazio di Loyola
Andrea Pozzo's trompe-l'oeil ceiling and fake dome; 15 min.
An oval piazza that keeps the shape of Domitian's 1st-century stadium, with Bernini's Fountain of the Four Rivers facing Borromini's Sant'Agnese in Agone.