The Grupo Regina Hoteles always have recommendatios for traveleres.

The Trevi Fountain
Rome may be a city of high fashion and expensive tastes, but its rich history and art offer plenty of culture that won’t cost you a dime, including churches and most monuments. You don’t have to look far for free activities in the Eternal City.
Attractions
The oldest standing domed structure in Rome, the Pantheon was built in 27 B.C. as a temple honoring all the Roman gods, then was converted in A.D. 609 to a Christian church. The famous architect Brunelleschi used it as inspiration when designing the cupola for the Duomo (cathedral) in Florence. Its most striking feature is the oculus, the open-air aperture at the top of the dome that lets in natural light. It is the burial place of several famous artists, including Raphael. Mass is held here Saturdays at 5 p.m. and Sundays at 10:30 a.m.
Stroll through the ruins of what was once the center of a powerful empire at the Foro Romano, the former commercial, governmental, and religious center of ancient Rome. It contains the remains of several temples and judicial buildings, and was the site of some of Rome’s most important events.
The Arco di Constantino, located near the Colosseum, is Rome’s largest arch. About 65 feet (20 meters) high,it was built in A.D. 315 to commemorate Emperor Constantine’s triumph over Maxentius, after which he allowed the practice of Christianity in the Roman empire.
See the “wedding cake,” as locals refer to it: Il Vittoriano, the large white-stone monument on Piazza Venezia near the Capitoline Hill, was constructed at the turn of the 20th century to honor Victor Emmanuel II, the first king of unified Italy. The building houses the tomb of the Unknown Soldier, where an eternal flame burns. The massive monument is topped by a statue of Victor Emmanuel on a horse, accompanied by winged depictions of Victory. A museum inside details the history of the Italian Reunification. The large white columns around the building are sometimes called the “false teeth.”
Test your luck at La Bocca della Verità (“The Mouth of Truth”). This grotesque sculpture of a wild-eyed face on the portico of the church of Santa Maria in Cosmedin has a macabre reputation, made famous by Gregory Peck and Audrey Hepburn in Roman Holiday. Legend has it that if you put your hand in its gaping mouth and tell a lie, you’ll pull out nothing but a stump. 18 Piazza Bocca della Verità.
Walk off that gelato: The Spanish Steps in Piazza di Spagna make up the longest and widest staircase in Europe. Originally proposed by the French, this grand staircase leads from the Piazza di Spagna to the church of Trinità dei Monti (they became the “Spanish” steps after the Spanish embassy moved to the square). Once a hangout for artists, the steps are now abuzz with students, tourists, shoppers, and portrait sketchers.
The world center of the Catholic Church and the largest Roman Catholic building in the world, St. Peter’s Basilica is also an astounding work of art. Entry to the main floor is free. The outside colonnade and the 90-foot-tall (30-meter)baldacchino, the staggering bronze canopy that shelters the Papal Altar, where only the pope may celebrate Mass, were designed by Gian Lorenzo Bernini, one of the greatest baroque sculptors. Don’t miss the “Pietà,” one of Michelangelo’s most famous statues (now sheltered behind glass after an attack by a hammer-wielding maniac), and make sure to rub St. Peter’s well-worn foot for good luck as you pass the bronze statue. There is a six-euro charge to climb up to the dome, designed by Michelangelo.
San Clemente, a church on Via San Giovanni, harbors three churches in one. The lowermost level contains a mithraeum, an ancient worship site; this is the best preserved of 12 similar sites discovered in Rome. Above the mithraeum is the first version of the church as a Christian worship site, with a sanctuary dating to the fourth century A.D. The fresco depicting St. Sisinus dates between the eighth and 11th centuries. The top level is home to a sanctuary built in the 12th century that contains some spectacular mosaics. Via San Giovanni in Laterano at Piazza San Clemente; +39 06 77 40 021.
Culture
The Vatican Museums are free of charge on the last Sunday of every month, from 8:30 a.m. to 2 p.m. (the last admission is at 12:30 p.m.). +39 06 69 88 33 33.
The Gallery of the National Academy of San Luca houses works by members of the academy, including Guido Reni. Admission is free. Piazza dell’Accademia di San Luca 77; +39 06 67 98 850.
Converted from the former Nazi headquarters of the SS Kommandatur, where many leaders of the Roman Resistance were tortured and imprisoned, the free Historic Museum of the liberation of Rome (Museo Storico della Liberazione) chronicles the events that occurred in Rome during World War II. Via Tasso 145; +39 06 70 03 866.
http://traveler.nationalgeographic.com/2008/07/free-city/rome-text/3