Strasbourg

European Parliament: The European Parliament's Strasbourg hemicycle is one of the Parliament's two working chambers (alongside Brussels), used for its monthly plenary sessions, and the distinctive glass-and-steel Louise Weiss building is a notable piece of contemporary institutional architecture on the Strasbourg skyline. Strasbourg's role as a seat of the Parliament, alongside its history as a symbol of Franco-German reconciliation, gives the building genuine political and historical weight beyond its architecture. Casual walk-in access isn't generally available — visits are organized through the Parliament's official visitor program, often requiring advance registration, and are most interesting when they coincide with an actual plenary session in progress. For most visitors without a specific advance booking, the building is worth viewing from outside as part of a walk through the surrounding European institutions district, which also includes the Council of Europe and European Court of Human Rights.

Haut-Koenigsbourg Castle: Haut-Koenigsbourg is a large medieval castle perched dramatically on a hilltop in the Vosges foothills, with sweeping views over the Alsace plain toward the Rhine and, on clear days, the Black Forest in Germany. Though its origins date to the 12th century, the castle as it stands today is largely a heavily restored (some would say reimagined) reconstruction commissioned by Kaiser Wilhelm II in the early 1900s, when Alsace was under German control — giving it a slightly theatrical, storybook completeness that differs from most genuinely weathered medieval ruins. That reconstruction is itself part of what makes it interesting historically, as a monument to how the Kaiser wanted medieval German-Alsatian history presented, alongside being simply a dramatic and very photogenic castle to explore, with furnished rooms, armor displays, and extensive ramparts. The trip from Strasbourg takes some effort without a car, which makes it more of a half-day-to-full-day excursion often combined with the nearby Alsace Wine Route villages.

Palais Rohan is an 18th-century episcopal palace built for the powerful Rohan family of cardinals, and today it houses three separate museums under one roof: the Musée des Beaux-Arts (paintings, including Old Masters), the Musée Archéologique, and the Musée des Arts Décoratifs, which preserves several of the palace's original lavish 18th-century state rooms, including the cardinal's opulent private apartments. It's a substantial, somewhat underrated stop given its proximity to the cathedral — visitors often see the cathedral and move straight to Petite France without realizing the palace next door holds a genuinely strong collection across three distinct museums, best tackled with a plan for which of the three interests you most rather than trying to do all comprehensively in one visit.

Petite France: La Petite France is Strasbourg's most picturesque quarter, a former tanners' and millers' district built along canals of the Ill river, with half-timbered houses dating largely from the 16th and 17th centuries reflecting its working-class craft origins rather than any grand civic purpose. The Ponts Couverts (covered bridges, though no longer actually covered) and the adjacent Barrage Vauban dam offer some of the best photo vantage points over the canals and towers. It's compact and easy to cover on foot, best enjoyed simply wandering the canal-side streets, and gets busy with tour groups by midday, so an early morning or evening visit finds it noticeably quieter and, with the half-timbered facades reflected in the canal water, considerably more atmospheric.

Place Kléber is Strasbourg's largest and most central square, named for a Napoleonic general born in the city, whose statue stands at its center over a monument containing his remains. It's flanked by the Aubette building, a striking early-20th-century Modernist interior (partly by Theo van Doesburg) hidden behind a more traditional 18th-century facade — a contrast most visitors walk past without realizing is there. The square is the natural hub connecting the cathedral, Petite France, and the rest of the old town, and during Strasbourg's famous Christmas market season (late November through December), it becomes one of the market's central hubs, with a large decorated tree and dense stalls — genuinely worth planning a visit around if traveling in that window.

Strasbourg Cathedral is a soaring pink sandstone Gothic cathedral, its single completed spire making it, for centuries, the tallest building in the world (a title it held into the 19th century), and Victor Hugo reportedly called its facade a work of giant and delicate filigree — an apt description of its dense, lace-like stone carving. Inside, the 16th-century astronomical clock performs an elaborate mechanical show once a day at 12:30pm, with moving figures marking the time in a display that draws a dedicated small crowd. Climbing the platform partway up the tower (below the spire itself, which isn't accessible) rewards the effort with a wide view over Strasbourg's rooftops and, on clear days, toward the Vosges and Black Forest. The cathedral is also the visual anchor of Strasbourg's Christmas market season, with the square in front of it filled with stalls and a towering Christmas tree from late November through December.