St Mary's Collegiate Church, Haddington

Haddington Town House is a municipal structure in Court Street, Haddington, East Lothian, Scotland. The structure, which is the meeting place of East Lothian Council, is a Category A listed building.

Tenterfield House is a category B listed building in Dunbar Road, Haddington, East Lothian, Scotland. It was built in the 18th century as a two-storey private residence. A three-story wing with tower was added circa 1860. The house was used as a Christie Home for orphans until 1950, then a local authority children's home until 1992. It was converted into apartments in 1995.The house was once owned by Sir Stuart Donaldson, the first Premier of the Colony of New South Wales, Australia, who in the mid nineteenth century gave its name to his property, Tenterfield Station, in New South Wales and thus to the town of Tenterfield, and through that to the Tenterfield Oration, the speech which led ultimately to the federation of Australia.The building was given category B listed status in December 1977, affording it legal protection from unauthorised alteration from demolition.The adjacent Tenterfield Cottage was destroyed by fire in July 2011. It was empty and proposed for demolition at the time.The name "Tenterfield" refers to a tenter field.

The Corn Exchange is a commercial building in Court Street, Haddington, East Lothian, Scotland. The structure, which is now used as a community events venue, is a Category B listed building.

The Palace of Haddington was a 12th–13th-century royal palace in Haddington, East Lothian, Scotland. The palace stood in King Street (now Court Street), on the site of the present East Lothian Council buildings. Remains of the vaulting of the palace were found in 1833, during excavations. Ada de Warenne obtained Haddington as part of her marriage settlement with Prince Henry of Scotland. Upon the death of her husband in 1152, Ada lived at the palace until her death in 1178. King William the Lion of Scotland used the palace from time to time and it was the birthplace of Alexander II in 1198. The palace and town were burned and pillaged in 1216, by an English army under the command of King John of England. The Scottish royal family appear to have abandoned the palace due to the damage caused.

County Buildings is a municipal structure in Court Street, Haddington, East Lothian, Scotland. The structure, which was the headquarters of East Lothian County Council and was also used as a courthouse, is a Category B listed building.

The Royal Burgh of Haddington (Scots: Haidintoun, Scottish Gaelic: Baile Adainn) is a town in East Lothian, Scotland. It is the main administrative, cultural and geographical centre for East Lothian. It lies about 17 miles (27 kilometres) east of Edinburgh. The name Haddington is Anglo-Saxon, dating from the sixth or seventh century AD when the area was incorporated into the kingdom of Bernicia. The town, like the rest of the Lothian region, was ceded by King Edgar of England and became part of Scotland in the tenth century. Haddington received Burgh status, one of the earliest to do so, during the reign of David I (1124–1153), giving it trading rights which encouraged its growth into a market town. Today, Haddington is a small town with a population of fewer than 10,000 people. But during the High Middle Ages it was the fourth-biggest town in Scotland (after Aberdeen, Roxburgh and Edinburgh). In the middle of the town is the Haddington Town House, completed in 1745 based on a plan by William Adam. When first built, it contained markets on the ground floor, and an assembly hall on the first floor to which improvements were made in 1788, and a spire was added in 1831. Nearby is the corn exchange (1854) and the county courthouse (1833). Other notable nearby sites include: the Jane Welsh Carlyle House; Mitchell's Close; and a building on the High Street that was the birthplace of the author and government reformer Samuel Smiles and is marked by a commemorative plaque. John Knox was probably born in Haddington and Knox Academy, the local high school, is named after him.

The sieges of Haddington were a series of sieges staged at the Royal Burgh of Haddington, East Lothian, Scotland, as part of the War of the Rough Wooing, one of the last Anglo-Scottish Wars. Following Regent Arran's defeat at the battle of Pinkie Cleugh on Saturday 10 September 1547, he captured the town of Haddington. The intention was to form a network of mutually supporting English forts in lowland Scotland. The English forces built artillery fortifications and were able to withstand an assault by the besieging French and Scots troops supported by heavy cannon in July 1548. Although the siege was scaled down after this unsuccessful attempt, the English garrison abandoned the town on 19 September 1549, after attrition by Scottish raids at night, sickness, and changing political circumstance.

Haddington Athletic Football Club are a Scottish football club based in Haddington, the county town of East Lothian. Nicknamed the Hi-His, the club were founded in 1939 and play their home matches at Millfield. The team competes in the East of Scotland League Premier Division, having moved from the junior leagues in 2018.In July 2021, Scott Bonar became the manager of the club.

Knox Academy is a co-educational state secondary school located in Haddington, East Lothian, Scotland. Originally founded in 1379 as a medieval grammar school, it is one of the oldest schools in the world.

Lennoxlove House is a historic house set in woodlands half a mile south of Haddington in East Lothian, Scotland. The house comprises a 15th-century tower, originally known as Lethington Castle, and has been extended several times, principally in the 17th, 19th and 20th centuries. The house is protected as a category A listed building, and is described by Historic Scotland as "one of Scotland's most ancient and notable houses." The wooded estate is included on the Inventory of Gardens and Designed Landscapes in Scotland, the national listing of significant gardens.It is now the seat of the Duke of Hamilton and Brandon.

Amisfield House was a substantial Palladian mansion near Haddington, East Lothian.

Herdmanflat Hospital was a psychiatric hospital in Aberlady Road, Haddington, Scotland. It was operated by NHS Lothian.