Question: why was the hills tavern renamed the century inn?
Context: Butters’ Tavern, an old time hostelry, was a privately owned inn and tavern located at the south end of Main Street, Concord, New Hampshire, at the junction of South Main, Water, and West streets.  Butters' Tavern sat atop "Butters' Hill" and was said to have been a desirable business location where it was able to attract patrons, typically men traveling with railroad teamsters, or men and women traveling by steamships and other vessels along the Merrimack River, or cattlemen traveling by foot.  Butters' Tavern was in operation for 65 years, 1780 to 1845, under various owners.  In its later years, the inn and tavern became known as the "Concord Railroad House".  It was a favorite overnight place for teamsters and was described as "a place of entertainment for man and beast".  It was also said that "jolly times were witnessed within their walls when the teamsters tarried overnight". Marshallton Inn, also known as The General Wayne Inn, is a historic inn and tavern located in West Bradford Township, Chester County, Pennsylvania.  The original section was built about 1790, and subsequently enlarged with five additions.  It is a 2 1/2-story, fieldstone and frame structure in an Early Federal style.  It was originally built as a residence, but converted to an inn and tavern by 1814.  It continues to operate as a tavern and restaurant. The National Road (also known as the Cumberland Road) was the first major improved highway in the United States built by the federal government.  Built between 1811 and 1837, the 620 mi road connected the Potomac and Ohio Rivers and was a main transport path to the West for thousands of settlers.  When rebuilt in the 1830s, it became the second U.S. road surfaced with the macadam process pioneered by Scotsman John Loudon McAdam. Crossroads Tavern, also known as Crossroads Inn, is a historic inn and tavern located at North Garden, Albemarle County, Virginia.  It was built about 1820.  In the mid nineteenth century, Clifton G. Sutherland, son of Joseph Sutherland, owned and ran the tavern which was located on the Staunton and James River Turnpike.  It served as a tavern and overnight lodging for farmers and travelers using the turnpike.  In 1889, Daniel B. Landes bought the land at the public auction of the estate of Clifton Sutherland.  The property continued to be conveyed to various owners over the years.  The Crossroads Tavern is an early nineteenth century two- to three-story, three bay, double pile brick structure.  The building sits on top of a brick and stone foundation, is roofed with tin and has pairs of interior brick chimneys on either gable end.  The brick is laid in five course American bond with Flemish variant.  Windows on the basement level at the rear of the house (north side) are barred; other basement windows are nine-over-six sash.  Put-holes are found at the west end of the building, formerly providing sockets for scaffold boards should repairs be necessary.  The front facade is dominated by a porch on the second story extending the entire width of the south and east facades.  It is supported by five rounded brick columns and the tin roof above is supported by simple square wooden pillars connected by horizontal rails.  Doors of the front of the basement level open respectively into kitchen and dining room and into a spirits cellar with its original barrel racks as well as a laundry fireplace.  Floors on this level were originally dirt but dining room and kitchen floors have been cemented.  The main entrance door on the second level, with its multi-panes lights, opens onto a central stair hall with tow main rooms on either side.  This stair hall has an ascending stair at its front and both ascending and descending stairs toward its center.  Formerly the ascending stairs led to upstairs areas which did not connect.  There is no ridge pole in the three attic rooms.  The interiors of windows and doors on the main entrance side have extremely long wooden lintels.  With few exceptions, the interior woodwork is original, including floors, chair rails, mantels and built in cupboards.  Also on the property is a two story contributing summer kitchen, brick up to the second story and frame above, and with an exterior brick chimney at the rear gable with fireplaces on both floors.  It is operated as a bed and breakfast. Half-Moon Inn, also known as the Court Inn and Thorton's Tavern, is a historic inn and tavern located at Newtown, Bucks County, Pennsylvania.  The original 1 1/2-story, stone and frame building was built in 1733.  Subsequent additions occurred in 1740, 1757, and 1792.  The portion at 101 Court Street is a 2 1/2-story, 3 bay, stone structure.  It was restored in 1965 by the Newtown Historic Association.  The portion at 105 Court Street has a stuccoed stone first story, with a timber frame second story added between 1825 and 1840.  The building housed an inn and tavern until 1818, during which time Newtown served as the county seat.  It houses the headquarters of the Newtown Historic Association and is open as a local history museum.  The holdings include a special collection on early American folk painter, Edward Hicks (1780-1849). The Bird & Bottle, formerly named Warren's Tavern, is historic Inn located in Garrison, New York.  It is situated at the intersection of Old Albany Post Road and Indian Brook Road, midway between New York City and Albany, New York.  It was established in 1761 by Samuel Warren, who converted his home into a stage coach stop initially named “Warren’s Stop” for those travelling by stage coach from New York City to Albany.  Established fifteen years before the start of American Revolution, Warren's Tavern changed hands to Warren's son-in-law, Absalom Nelson, when he married Esther Warren at the beginning of the conflict in 1776.  The renamed Nelson's Tavern became a favorite watering hole for both Continental and British soldiers during the Revolution.  It was ultimately seized by the Continental Army, which used it as a regional headquarters.  The tavern closed in 1832, and was reborn as the Bird and Bottle in 1940.  The "Bird" part of the Inn's name is a reference to the wild pheasant that were prevalent in the area. Ye Olde Tavern is a restaurant in Manchester Center, Vermont, USA, that is listed on the Vermont Register of Historic Places.  It was built by Aaron Sheldon from Dorset, Vermont, in 1790, making it the oldest inn in the state of Vermont.  It was also one of the first buildings in Manchester to house telephone lines, and was once "the headquarters for the movement to license the sale of 'spirituous beverages'."  It began as a tavern in 1790 called The Stagecoach Inn, before becoming Lockwood's Hotel circa 1850.  In 1860, the building was renamed Thayer's Hotel by the new owner, Steven Thayer.  It became the Fairview Hotel in 1902 and, in 1934, it was a hotel and antique shop run by the new owner Walter Clemons.  In 1975, it was renamed Ye Olde Tavern by Peter and Susan Palmer, who renovated the place in time for the 1976 United States Bicentennial.  The restaurant still has traces from its past. Hill's Tavern is a historic building in Scenery Hill, Pennsylvania.  It was heavily damaged by a fire that started shortly before midnight on August 17, 2015.  For a period in the early 1900s, the inn was known as Central Hotel.  Now called the Century Inn, it had been the oldest tavern in continuous use on the National Road, until the fire brought an end to its 221 years of continuous operation.  The overnight facilities accommodated 23 overnight guests and the dining room could seat up to 140 guests.  The outdoor gazebo offered additional seating during the warmer months. The Red Fox Inn & Tavern, also known as the Middleburg Inn and Beveridge House, is a historic inn and tavern located in Middleburg, Loudoun County, Virginia.  According to the National Register of Historic Places placard on the building, the Red Fox Inn was established circa 1728.  Some historic artifacts on the building date to about 1830, with additions and remodelings dating from the 1850s, 1890s, and the 1940s.  It consists of a 2 1/2 story-with-basement, five-bay, gable-roofed, fieldstone main block, with a two-story, three-bay, gable-roofed fieldstone rear wing.  The front facade features a one-story, one-bay, pedimented porch dating from the 1940s.  It has a standing seam metal gable roof and exterior end chimneys.  The buildings exhibits design details in the Federal and Colonial Revival styles.  It is thought to be one of the oldest continuously operated inns in Virginia as well as the United States.  The Red Fox Inn & Tavern has served a variety of functions including: stagecoach stop, inn, tavern, butcher shop, apartment house, post office, and hotel. William Rand Tavern, also known as Rectory of the Christ Episcopal Church, Sykes Inn, and Smithfield Inn, is a historic inn and tavern located at Smithfield, Isle of Wight County, Virginia.  It was built about 1752, and is a two-story, five bay, Georgian style brick and frame building.  It has a standing-seam metal hipped roof with parged brick chimneys at the building ends.  A rear addition was built in 1922-1923.  It opened as a tavern in 1759, and operated as such until 1854, when the Vestry of Christ Church purchased it.  The church sold the property in 1892, and it resumed use as an inn in 1922.  It is now operated as a bed and breakfast.
Answer: Built between 1811 and 1837