Casina delle civette

Built as a whimsical retreat within the grounds of Villa Torlonia, the Casina delle Civette takes its name and much of its charm from an extensive collection of Art Nouveau stained-glass windows, many featuring owl motifs, alongside decorative ceramics and ironwork typical of early 20th-century Italian design. It's a smaller, more idiosyncratic stop than Rome's major museums, appealing to those specifically drawn to Liberty-style architecture and design rather than classical antiquity or Renaissance painting. A 4.6 rating and notably high hidden-gem score reflect its status as a lesser-known but well-loved find, even as some reviewers flag the ticket price as steep given how much of the original interior survives. The surrounding Villa Torlonia park is pleasant for a walk before or after.