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The Eternal City celebrates its long history with monuments, churches and restored ruins that offer a glimpse into life during the days of the great Roman Empire. Here are our picks for the 10 essential attractions to round out your visit to Rome.

Colosseum 

The Roman Colosseum is a testament to the architectural skills of the ancient Roman people and offers insight into the culture that celebrated the gladiator games at this huge entertainment arena. The first bloody fight ensued in A.D. 82, starting a tradition of battles between men and beasts in a public forum with crowds reaching 50,000. Outside of the Colosseum, look out for the photo opportunity beneath the Arch of Constantine, which was built in 315 to commemorate the victory of Constantine over Marcus Aurelius Valerius Maxentius. To avoid lengthy lines, order tickets online ahead of time -- they're good for 2 consecutive days and include admission to the nearby Forum and Palatine Hill.

Roman Forum 

In ancient Rome, the Forum was the center of city life, playing host to festivals, celebrations, funerals and rituals. The city grew around this grassy area that was empty marshland until the 7th century B.C. The area lost its luster and fell to waste around the 8th century and remained that way until excavations in the early 20th century. Today, you can pick up a map for a self-guided tour of the structures and arches or join a tour group for a more detailed history of the area. Then climb to the top of Palatine Hill for sweeping views of the city.

Pantheon 

Rome's temple to the gods is remarkably intact, a great feat considering that it was originally constructed in 27 B.C. and was later rebuilt in the early 2nd century A.D. after fire damage. An altar was later added for Christian worship after the country abandoned its pagan gods. After the Renaissance, the Pantheon took on yet another role as a designated tomb for some of the city's artists and elite including the painter Raphael and former kings of Italy. The Pantheon's architecture has inspired copycats around the globe with its tall columns reaching toward the sky, expansive interior and impressive dome with the sun shining through the oculus, a 27-foot hole in the center of the rotunda.

Vatican City 

Even though it's located in Rome, Vatican City has been an independent state since 1929 with its own flag, coins and stamps. It even has its own militia, the Swiss Guard, which protects this state, the Pope and the 800 full-time citizens and visiting residents. The first impressive site is St. Peter's Square itself designed by Bernini in the late 17th century. As long as you're dressed appropriately (no bare shoulders or shorts or skirts above the knee), you may enter St. Peter's Basilica and see Michelangelo's Pietá, a stunningly beautiful and sad sculpture. Continue up to the roof where you can take in the view of the large square and city beyond. Also contained in the Vatican's walls, the Vatican Museums hold Italian masterpieces, including Michelangelo's painted ceiling at the Sistine Chapel.

Piazza Navona 

Rome is known for beautiful and charming squares lined with restaurants and open-air cafes. The loveliest of them all is the large public square at Piazza Navona, once the site of sporting events at Domitian's stadium in A.D. 89. The square contains 3 fountains, and the largest and most memorable is Bernini's Fountain of the Four Rivers with each of the 4 statues representing a river from different continents.

Trevi Fountain 

Travelers' lore lists various reasons for throwing 3 coins in the fountain at the marvelous Trevi, with benefits ranging from finding love to returning to the city. Once you've mastered your art of coin-throwing and wished for the appropriate outcome, take some time to explore this Baroque masterpiece showing the god Neptune riding in a shell-shaped chariot led by seahorses. And you can feel good about your charitable donation as the money (nearly $3,500 each day) collected from the fountain is used to support food programs for the city's poor.

Galleria Borghese

The Galleria Borghese is just as beautiful on the outside as it is on the inside, boasting a prime location in the sprawling gardens at Villa Borghese. Inside the museum, you'll find Bernini sculptures including Apollo and Daphne and his take on young David preparing to take on Goliath. The impressive collection also includes works by master artists Correggio, Raphael, Rubens and Caravaggio. Acquiring tickets will be your biggest challenge -- the museum admits only 360 visitors every 2 hours so you'll need to make reservations far in advance.

Capuchin Crypt 

While some may find the displays of bones and skulls a bit on the morbid side, the Capuchin Crypt located under Our Lady of the Conception of the Capuchins celebrates the life of the religious order of the Capuchin friars. The friars arranged the bones of the deceased into displays and frames for Christian artwork in various spots throughout the crypt including the Crypt of the Skulls and the Crypt of the Resurrection. Not merely a macabre display, these creations tell the story of life, death and resurrection and show a unique interpretation of the church's teachings of good, evil and eternity.

Castel Sant'Angelo 

This fortress on the Tiber River was originally designed by the Emperor Hadrian to be used as a mausoleum for his own family. And it was certainly a resting place fit for royalty, rising above the city with glorious views. Over the centuries, it moved beyond its original purpose and served as a military fortress in 401 and later a papal residence and even a prison. It's now a museum where you may tour the apartments and see the statue of the archangel Michael rising above the terrace.

Spanish Steps 

The Spanish Steps may be the longest and widest staircase in all of Europe, but that's not what draws visitors to this popular tourist spot. A Barcaccia fountain bubbles at the foot of the steps while the Trinità dei Monti church rises above the crowds at the top of the steps. But the best spot is somewhere in between the 2: take a seat in the middle of the wide staircase and watch the city go by as beautiful people hurry into the nearby high-end shops, designer boutiques and restaurants.