The city is located on the banks of the Lech River. Its population is nearly the same as that of Siófok. The nearby Lechfeld was the site of the Battle of Lechfeld in 955, where the Hungarian raiders suffered a significant defeat against the forces of Emperor Otto I of the Holy Roman Empire. In 1160, Oroszlán Henrik built a castle here to defend the important crossing point on the Lech River from new enemies, the Swabians, who attacked from the west. The city's core still retains the 13th-century wall, reaching a height of up to 5 meters in some places. The outer ring of walls was established in the 15th century. Like many Bavarian cities, the early livelihood of the settlement was based on salt trading. In the 15th century, the town became famous for the Landsberg cloth and the Landsberg earthenware.
Notable landmarks include:
- Battle of Lechfeld: The Battle of Lechfeld, in which the Hungarian raiders suffered a severe defeat from Emperor Otto I, took place northwest of the city.
- Baroque Fountain (Marienbrunnen): Located in the main square, it features a column topped with a statue of Madonna, created by Joseph Streiter.
- Town Hall (Rathaus): Built between 1699 and 1702 with a late Renaissance facade. In 1749, Dominikus Zimmermann adorned it with beautiful stucco decoration. He was also elected mayor in 1749 and worked in the building with his own hands for five years. His work includes the stucco decoration of the second-floor halls.
- Beautiful Tower (Schöner Turm): Part of the old inner city wall, built in the 16th century.
- Parish Church (Pfarrkirche Mariä Himmelfahrt): Located on the city's main street (Ludwigstrasse). The lower part of its bell tower dates back to around 1380, while the octagonal tower top and spire were completed in 1698 through the joint work of local craftsmen Jörg Pfeiffer and Lorenz Luidj. It features an altarpiece by Antonio Triva. One of the side altars houses a life-sized Gothic Madonna by Hans Multscher (Rosenkranzaltar), created in 1721 according to Zimmerman's design. The stained glass windows in the sanctuary date back to 1562.
- St. John's Church (Johanneskirche): Built according to Zimmermann's plans between 1750 and 1752.
- Jesuit Monastery Church (Klosterkirche Hl. Kreuz): Built on the hilltop between 1752 and 1754. Its facade exhibits distinctive Jesuit Baroque features with two towers. The interior features enormous ceiling frescoes, carved confessionals, and wrought-iron grilles.
- Bavarian Gate (Bayertor): The most beautiful Gothic city gate in Germany, built in 1425.