I Colori dell'Antico: Marmi Santarelli ai Musei Capitolini

Look for

• The Nike with the head of Dionysus

  A 2nd-century torso of a Nike in Egyptian red porphyry with a white marble head of Dionysus, given arms in the 1500s or 1600s and set on giallo antico, alabaster and africano bases with bronze animal feet.

• The four compass walls

  Fragments of columns, basins and floors sit on metal grids like a geologist's specimen drawers, each wall facing the direction its stones came from.

• The Santarelli sample cabinets

  Two late-18th-century lacquered and gilded vitrines holding 422 marble samples gathered in Rome in the early 1800s.

• The Capitoline sampler

  Enrico Guj's set of 288 same-size tiles, 160 of them on view in two cases, begun in the second half of the 1800s.

• The marble-workers' tools

  Picks, mallets, chisels and a bow drill from the Fiorentini workshop, the kit that rang through Rome's marble yards until the 20th century.

Good for

• Locals Who've Seen It All
• Nerding Out
• Rainy Days

Skip if

You want statues: the only sculpture is one composite bust, and the rest is stone fragments and samples.