Between 1585 and 1588 Landini executed his most famous work, the so-called Fonte delle Tartarughe (Rome, Piazza Mattei), named after the tortoises (added in 1658 by Bernini in a restoration) that clamber from the bronze youths' hands into the upper basin of the fountain. Although the overall design was made in collaboration with Giacomo della Porta, Landini was solely responsible for the spirited boys ephebes, whose lively poses and arrangement around the basin recall Florentine fountain designs of the previous generation.