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Catacombs
The
burial tunnels of Rome’s early Christians are like a honeycomb beneath
the consular roads out of Rome, especially along Via Appia Antica.
Grave niches stacked like shelving along dark corridors are carved into
the tufa, with some precious remnants of fresco and engraved marble
slabs .

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Nero’s Golden House
Like
most of “underground Rome”, Nero’s fabulous and vast palace was not
originally buried. But when Renaissance worthies such as Raphael chopped
holes in the roof and lowered themselves into the sumptuously decorated
rooms on ropes, they called the spaces “grottoes”, and named the
intricate frescoed designs of foliage and fantastical creatures
“grotesques” .

Nero’s Golden House
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Mamertine Prison
This
was Rome’s ancient central lockdown (built 7th–6th century BC). Among
its celebrity inmates were Vercingetorix, a rebel Celtic chieftain,
styled the last king of Gaul, who was brought to Rome in chains, and St
Peter, who left an impression of his face where the guards reportedly
slammed him against the stairwell wall. Downstairs is also the alleged
column to which St Peter was chained.

Mamertine Prison
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Via S Pietro in Carcere/Via Tulliano
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Open 9am–12:30pm, 2–5pm (winter), 9am–12:30pm, 2:30–6:30pm (summer) daily
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Donation
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Crypta Balbi
A jumble of excavations from all eras, including a piece of 13 BC crypta
(porticoed courtyard) attached to a destroyed theatre. The museum’s
didactic panels, which are an excellent introduction to Rome’s layer
effect, plus the medieval frescoes are more interesting than the rather
plain excavations underneath.-
Via delle Botteghe Oscure 31
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Open 9am– 7:45pm Tue–Sun
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Adm
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Pompey’s Theatre
Pompey’s
61–55 BC theatre is still evident in the curve of medieval buildings on
Largo del Pollaro. Its fabric is visible only in the basements,
including the downstairs rooms of the da Pancrazio restaurant installed
in the ancient travertine corridors.-
Piazza del Biscione 92
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Open 12:30–2:30pm, 7:30–11pm Thu–Tue
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Free
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