Kreuzlingen (alt. 404 m/1,326ft; pop. 17,000), sister city to the German town of Constance, is separated from that town only by the line of the frontier, which does not follow the Rhine but runs through the built-up area at some distance from the river. The town's name comes from a relic of the True Cross which is preserved in the conventual church.
In the Hauptstrasse of Kreuzlingen is the former Augustinian convent (since 1844 occupied by the Thurgau teachers' training college) built by Michael Beer in 1640-53 to replace an earlier monastic house destroyed during the Thirty Years' War and remodeled in Baroque style in 1765. St Ulrich's church, well restored, together with the rest of the conventual buildings, after a fire in 1936, has notable ceiling frescoes, a fine organ and a grille by Jakob Hoffner (1737). A representation of the Agony in the Garden (in the north lateral chapel) preserves 280 of its original 322 figures (1720-40), and a large Gothic cross bears a figure of Christ with natural hair.
Thurgau Doll Museum
In the Tenants' house of Schloss Girsberg the Thurgau Doll Museum was opened in 1988, the oldest of its kind in the country containing over 300 dolls and old-fashioned children's toys.
Seeburg Park and Country Residence
To the north of Kreuzlingen, by the lake, lies the ivy-clad Seeburg, built in 1598 as a country residence of the bishops of Constance, largely destroyed during the Thirty Years' War, rebuilt in 1879-94 and now occupied by the military. The park contains a reserve for fallow deer and wildfowl.
1km/0.5mi east of the Seeburg, at the Fischerhaus camping site and restaurant, is a waterworks, and just offshore is a fountain, visible far and wide when it is working (illuminated at night).
Bernrain - Observatory (Chapel)
Southwest from Seeburg, in Bernrain, are an observatory and a Baroque pilgrimage chapel.
Museum Rosenegg, Kreuzlingen, Switzerland
Museum Rosenegg highlights life in Kreuzlingen during the Middle Ages. The museum features furnished rooms and detailed information on exhibits.
Late Night Festival
This annual festival takes place in mid-August.