(_Any of these Excursions can be made in one day._)
PORTA DEL POPOLO: -- Villa Borghese -- Villa di Papa
Giulio -- Acqua Acetosa -- Ponte Molle -- Villa of Livia
-- Veii -- Monte Mario -- Villas Mellini and Madama. PORTA
SALARA: -- Villa Albani -- Catacomb of S. Priscilla --
Antemnæ -- Ponte Salara -- The Anio -- Fidenæ. PORTA PIA:
-- Porta Nomentana -- Villa Torlonia -- Church and
Catacomb of S. Agnese -- S. Costanza -- Ponte Nomentana --
Mons Sacer -- Tomb of Virginia -- Basilica and Catacomb of
S. Alexander. PORTA S. LORENZO: -- The Roman Cemetery --
Basilica of S. Lorenzo -- Ponte Mammolo -- Hannibal's Camp
-- Castel Arcione -- Aquæ Albulæ -- Ponte Lucano -- Tomb
of the Plautii. TIVOLI: -- Villa D'Este -- Temples of
Sibyl and Vesta -- The Glen and Falls -- Pons Vopisci --
Villa of Quintilius Varus -- The Cascades -- Ponte
dell'Acquoria -- Villa of Mæcenas -- Temple of Hercules --
Hadrian's Villa. PORTA MAGGIORE: -- The Baker's Tomb --
The Aqueducts -- Tomb of Helena (?) -- Gabii -- Ponte di
Nona -- Villa of the Gordian Emperors -- Tomb of Quintus
Atta. PORTA S. GIOVANNI. _First Excursion_: -- Via Appia
Nova -- Painted tombs -- S. Stephen's -- The Aqueducts --
Pompey's Tomb -- Albano -- Ariccia -- Genzano -- Lake and
Village of Nemi -- Palazzolo -- Lake Albano -- Castel
Gandolfo -- Site of Alba Longa (?) -- Vallis Ferentina --
Marino -- Grotta Ferrata -- Cicero's Villa. _Second
Excursion_: -- Frascati -- Tusculum -- Rocca di Papa --
Monte Cavo. PORTA S. SEBASTIANO: -- Via Appia. (See page
285.) PORTA S. PAOLO: -- Pyramid of Caius Cestius -- S.
Paul's outside the walls -- Remuria Hill -- Tre Fontane --
The Viaduct of Ancus Martius. OSTIA: -- Street of Tombs --
Houses -- Warehouses -- Temples -- Docks -- Palace --
Walls of Ancus Martius -- Museum -- View from Tower of the
Castle -- Castel Fusano -- Pliny's Villa.