Children splash in the spray pool at Frog Pond, the stately hotels near Boston Common gaze out toward green grass and tall trees where Emerson College students sometimes study, and skyscrapers gleam in the distance.

Perhaps a costumed guide strolls by the Common on her way to work.

Dogs trot by with their owners on a leash, and excited shouts from neighborhood kids aspiring to be future Red Sox drift over from the Common's ball field.
On winter days, skaters glide across Frog Pond, Boston Common's summer oasis now magically transformed into an ice skating rink.
Up on Beacon Hill to the north, the huge golden dome of the Massachusetts State House gleams against the blue sky. To the west, the glass sides of the Hancock building glisten in the distance. Walking tours of Boston visitors can be seen in all directions.
Boston Common, along with the adjacent Public Garden, forms the heart of the older neighborhoods of the city collectively known as Boston Proper.
It's easy to imagine that some earlier city planner with great foresight laid out this lovely expanse of green for future generations to enjoy.
But nothing could be farther from the truth.
Boston Common marks one end of Boston's history-filled Freedom Trail, and is also part of the popular Black Heritage Trail and Boston's Emerald Necklace of parks.
Despite all of the statues, monuments, and even an old graveyard that you see sprinkled around the area, it can be hard at first to imagine why the Common is a site on the Freedom Trail and Black Heritage Trail.
Is the Common included as a Trail site just because of its convenient location for a Visitor Information Center near the Park Street T Station?

No. The reason is that throughout the history of Boston, the Common has been the site of some of the city's most dramatic events.
When the Puritans arrived in Boston in 1630, they were not the first European settlers.
That distinction goes to William Blaxton, an English clergyman who settled on the west slopes of Beacon Hill in 1625 with 200 books and some cows, which he grazed on what is now Boston Common.
After the Puritans arrived in 1630, he decided to move to a less-populated area in what is now Rhode Island. In return for 30 British pounds, he sold them about 44 acres of his land, which he'd received as a grant from King James I. The Puritans needed a common pasture for their livestock. This moment is memorialized in the Founders Memorial near Beacon Street.
In addition to grazing their livestock on it and putting public buildings and even a graveyard along the edges, the Puritans and their descendents also used it for public executions of heretics, witches, Quakers, criminals, pirates, and other undesirables throughout the 18th century. These events provided an excuse for public holidays attended by large crowds. Fortunately, Boston's entertainment options have improved a lot since then.
In 1660, a couple of acres in the southeast corner started being used as a cemetery, now called Granary Burying Ground, after the town's original King's Chapel Burying Ground filled up. This is no longer part of the Common.
Although Boston banned building on the Common in 1640, the town continued to do so anyway through the early 1700s, erecting several public buildings where you'll now find Park Street Church.
You can find another old graveyard, the Central Burying Ground, near the corner of Boylston and Tremont Streets. It dates from 1756, when other city cemeteries became too crowded.
In addition to graves of many British and Colonial soldiers killed during the Battle of Bunker Hill in 1775, you'll also see graves containing the remains of French Roman Catholic immigrants from the 1700s.
American painter Gilbert Stuart, famous for his portraits of George Washington, is also buried here in an unmarked grave.
Because moving markers around for aesthetic effects (or grass-trimming convenience) used to be a common practice, the markers in this burying ground no longer rest in their original positions.
Almost from the beginning, Boston Common was also used as a military "trayning field." Remember, up until just a few years before the Revolutionary War, most colonists in Massachusetts thought of themselves as British-Americans. The militias may have been made up of colonials, but they served the English king.
Still, even before the end of the 1600s, Colonists began to tire of what they saw as "interference" from England. Tensions increased. During the 1760s, the British passed the Sugar Act, the Stamp Act, and finally the Townshend Acts, all aimed at showing their power and control in the form of taxes. "No taxation without representation" began to echo throughout Boston.

The Common's Revolutionary War significance is that when the first British troops arrived in 1768 - the beginning of the British Occupation of the city - they set up camps across the Commons.
Colonists didn't like having "foreigners" in their midst - that's putting it mildly - and numerous scuffles ensued.
After the Boston Massacre in 1770, sentiment began to swing strongly against the British.
During the evening of April 18, 1775, about 700 Redcoats, or "Regulars," assembled in Boston Common to begin a mission to seize a hidden cache of weapons hidden by the Patriots in Concord.
In 1775, a body of water called Back Bay came up to what is now Charles Street. The Public Garden, along with today's Back Bay neighborhood, were under water.
At the corner where Charles and Boylston Streets now meet, the troops traveled by ferry across Back Bay and the Charles River to the "mainland" of Charlestown and Cambridge.
Apparently unknown to the British troops, a group of Colonial Patriots called the "Sons of Liberty" had engaged in some creative eavesdropping in the Green Dragon Tavern, one of the historic Boston bars still in operation today, and learned about the plans to seize the munitions in Concord.
Additional eavesdropping in local taverns led to the discovery of the planned route, and the ride by Paul Revere and William Dawes to alert the Concord Patriots, and the "two if by sea" signal from the North End's Old North Church so that others would know.
From Cambridge, the Redcoats began their march west to Lexington and Concord on the following day - the first day of the American Revolution.
The Redcoats continued the Siege of Boston until 1776, when they were finally forced out on Evacuation Day.
During the 2+ centuries since the British left, Boston Common has evolved into a public space used for recreation, speeches, and entertainment.
Sheep were finally banished from the Common in 1830.
Soapbox orators vied for public attention throughout the 19th century at Brimstone Corner across from the Park Street Church.
Literary figures Oliver Wendell Holmes, Walt Whitman, and Ralph Waldo Emerson are known to have walked through the Common. No doubt Louisa May Alcott did as well during her sojourns on adjacent Beacon Hill.
Famous speakers and performers in the 20th century include Dr. Martin Luther King, Olivia Newton-John, and Willie Nelson. Pope John Paul II celebrated a public Mass.
During the Vietnam War in the 1960s and early 1970s, large anti-war protest rallies covered the Common.
President Barack Obama spoke here at a rally in October 2007 as part of his Presidential Primary campaign.
Some of the city's swankiest hotels boast about their perfect views of the Common. Boston walking tours like to start or end here. Some of Boston's best restaurants overlook the tree-filled slopes.
Over 200 festivities, parades, demonstrations, concerts, performances, rallies, and other events are held here each year. You can join the popular First Night celebrations here on New Year's Eve, or enjoy Shakespeare on the Common during the summer.
If you are visiting Boston Common while walking along the Freedom Trail or Black Heritage Trail, be sure to visit the 1888 Boston Massacre memorial sculpture near the Central Burying Ground at Tremont Street and Boylston. It commemorates the five men who died during a brawl with the British near the Old State House in 1770.
Crispus Attucks, of African and Native American ancestry and the first to die, is regarded as the first fatality of the American Revolution.

Also moving is the Robert Gould Shaw and Fifty-fourth Regiment Memorial by Augustus Saint-Gaudens near the corner of Beacon and Park Streets, across from the State House.
It honors the bravery of the first black regiment to serve in the Civil War and their white leader, Colonel Robert Gould Shaw.
Twenty six year old Colonel Shaw and half the regiment were killed in an attack on Fort Wagner, South Carolina.
In addition to looking at historical monuments, enjoy the Common's modern pleasures. Summer or winter, you'll find lots of things to do in Boston Common. Splash in the Frog Pond spray pool in the summer, ice skate on it in the winter (you can rent skates right there), picnic on its grassy slopes, and if you're traveling with children, let them enjoy the well-equipped playground.
Be sure to check out dates for the annual free Shakespeare on the Common performances - a "don't miss!" event.
Walk across Charles Street to the Public Garden, go for a Swan Boat ride on the Lagoon, and visit the Make Way for Ducklings statue.
If you're visiting Boston Common because it's part of the Freedom Trail, go inside the Visitor's Information Center near the Park Street T Station and pick up a free Trail map.
You'll also see lots of excellent books and bigger maps available for purchase. The small free maps are all you'll need to navigate the Freedom Trail, but you may find a larger city map convenient for other adventures.
Open: All day, every day
Cost: Free
Location: Bordered by Park, Tremont, Boylston, Charles, and Beacon Streets. Beacon Hill is to the north, Downtown Boston to the east and south, and the Public Garden is across Charles Street to the west.
Closest T station: Red and Green Lines/Park Street
Parking: Boston Common Garage
For more information: www.thefreedomtrailfoundation.org; 617-357-8300