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The Citadel of Liège was the central fortification of the strategic Belgian city of Liège, Wallonia until the end of the 19th century. It is located in the Sainte-Walburge neighborhood, 111 metres (364 ft) above the Meuse valley. The first citadel was built on the heights overlooking the city in 1255. It was rebuilt in a pentagonal shape by Prince-Bishop Maximilian Henry of Bavaria in 1650. This fortress was destroyed by France shortly afterwards, then rebuilt in 1684. During the Napoleonic Wars, it was given five bastions in the style of Vauban. By the late 19th century the citadel had become obsolete as a fort, replaced by the twelve forts of the Fortified Position of Liège, though it continued in use as a barracks and as a command post for the Fortified Position, contributing to the country's National Redoubt. In the 1970s the citadel was largely destroyed by the construction of a hospital on the site. The southern walls remain. An area on the north side is a memorial to Belgians executed in the citadel by German occupiers in World Wars I and II, while 20th-century bunkers remain on the south side.

The Hôtel d'Ansembourg is a former Baroque hôtel particulier in Liège, Belgium, located between Féronstrée and quai de Maestricht.

The Collegiate Church of St. Bartholomew is an historical building in Liège, Belgium. Founded outside the city walls, it was built in coal sandstone, starting in the late 11th century (the chancel) and lasting until the late 12th century (the massive westwork, with its twin towers which were reconstructed in 1876). It underwent, like most ancient religious buildings, modifications through the centuries. Nevertheless, the Meuse Romanesque—Ottonian architecture character of its architecture remained deeply rooted. The 18th century saw the addition of two more aisles, the opening of a neoclassical portal in the walls of the westwork, and the French Baroque redecoration of the interior. The interior of the western section has recently been restored back to the original style. The Collegiate Church of St. Bartholomew was one of the original seven collegiate churches of Liège, which also included the Churches of St. Peter, St. Paul, St. John, St. Denis, St. Martin, and the Holy Cross, and until the Liège Revolution of 1789 collectively comprised the "secondary clergy" in the First Estate of the Prince-bishopric of Liège. In 2006, the church emerged from heavy restoration work lasting seven years and involving 10,000 replaced stones and the restoration of the polychromy of the walls).

Montagne de Bueren (French pronunciation: ​[mɔ̃taɲ də byʁɛn, -ʁən]) is a 374-step staircase in Liège, Belgium. The staircase is named after Vincent de Bueren, who defended Liège against an attack by the Duke of Burgundy, Charles the Bold in the 15th century. It was built in 1881 to honour the 600 soldiers who died in the battle.In 2013, Montagne de Bueren was ranked as #1 on The Huffington Post's list of Most Extreme Staircases.In July 2020, in response to the impact of the COVID-19 pandemic in Belgium, Belgian explorer and adventurer Louis-Philippe Loncke ascended and descended the staircase 135 times carrying a 15 kg backpack, simulating an ascent of Mount Everest. The 9000m climb, which took 65 hours 30 minutes, was meant to show that one could still "trouver des défis physiques près de chez soi" (find physical challenges close to home).

The Ansembourg Museum (Musée d'Ansembourg) is a museum in the Belgian city of Liège. It is housed in the hôtel d'Ansembourg on Féronstrée in the historic heart of the city.

The Hôtel de Grady is a hotel particulier in Liège in Belgium, sited at 5 rue Hors-Château. It is also known as the hôtel Sklins or hôtel de.

The Hôtel de Ville is the town hall of Liège in Belgium, located on place du Marché. It was built in 1714. It is also known as La Violette.

The Palace of the Prince-Bishops (French: Palais des Princes-Evêques) is a historic building situated on the Place Saint-Lambert in the centre of Liège, Belgium. It was the residence of former Prince-Bishops of Liège and once faced the monumental Cathedral of St. Lambert. It now houses the Palace of Justice of Liège and the Provincial Palace, i.e. the government building of Liège Province.

On 6 December 1985, a bomb exploded in Palais de Justice, the main courthouse of the city of Liège in Belgium. The explosion took place shortly before hundreds of lawyers including Belgian Justice Minister Jean Gol would attend a swearing-in ceremony. The bomb severely damaged three floors and collapsed the ceiling of the 16th century palace. Philippe Balis, a 20-year-old law student, was killed in the blast.The attack took place just hours after Communist Combatant Cells terrorists bombed a NATO pipeline in Oudenaarde, a place in Flanders, and in France. However the courthouse and pipeline attacks were not linked.

St. Lambert's Cathedral, Liège (or in full, the Cathedral of Our Lady and St. Lambert; French: Cathédrale Notre-Dame-et-Saint-Lambert) was the cathedral of Liège, Belgium, until 1794, when its destruction began. This enormous Gothic cathedral, dedicated to Saint Lambert of Maastricht, occupied the site of the present Place Saint-Lambert in the centre of Liège.

The Place Saint-Lambert is a major square in the centre of Liège, Belgium. Until 1794, it was the site of St. Lambert's Cathedral. Remains of the foundations of the cathedral have been conserved, and are on display at the Archéoforum, under the square.The largest public building on the square is the former Prince-Bishops' Palace, which now houses the Palace of Justice of Liège and the Provincial Palace, i.e. the government building of Liège Province. There is a large bus station in the lower part of the square, which serves as the local transport hub for the city. On 13 December 2011, a murder–suicide attack took place in the square, in which 6 people were killed and 125 were injured.

The Archéoforum is an archaeological museum on place Saint-Lambert in Liège in Belgium. It is centered on the ruins of Saint Lambert's Cathedral and also includes the remains of a Gallo-Roman villa as well as displaying objects from the Mesolithic onward.