Hainburg between the swimming lake, forest and pilgrimage trails

The swimming lake, forest trails and pilgrimage sites give Hainburg its distinct character. In Klein-Krotzenburg, you’ll find reasons to enjoy a day at the lake as well as religious sites and a circular trail; in Hainstadt, a themed trail takes you into the world of the planets. When looking for a holiday apartment, it helps to first decide what you want to focus on during your stay: would you like the swimming lake to play a central role, explore themed trails, or are you mainly interested in the cultural character of the area?

Swimming lake in Klein-Krotzenburg

The swimming lake in Hainburg’s Klein-Krotzenburg district reopened on 10 May for the 2026 season. There are plenty of shady spots on the sunbathing lawn. Alongside the large lawn, there is a sandy area for various sports activities. This makes it possible to plan a relaxing time on the lawn and some activity on the sand as different parts of a day at the lake. If you want to make the swimming lake the focus of your holiday apartment search, Klein-Krotzenburg is the specific district to use as your starting point. The reopening date applies to the 2026 season.

Nature reserve and religious sites

The 34.77-hectare Pechgraben nature reserve near Klein-Krotzenburg includes land in the Klein-Krotzenburg district of the municipality of Hainburg. It offers a different focus from the sunbathing lawn and sandy area at the swimming lake: here, the description of the area centres on a designated natural landscape.

A Pietà is venerated as an image of grace in the small forest chapel of Liebfrauenheide. Ten major pilgrimages take place there every year from May to October, including the main and Fatima pilgrimages. Another religious building is the wayside shrine in Klein-Krotzenburg: the small sandstone structure has a niche for an image of the Virgin Mary. Together, the chapel and wayside shrine give your stay a cultural focus, distinctly different from a day at the swimming lake.

Circular trails and themed paths

The “Tree of the Year” trail starts in the Klein-Krotzenburg forest at the Tannenhof restaurant. Its approximately two-kilometre circular route follows the Speck and Kapellen trails and passes the Liebfrauenheide pilgrimage church. The route description thus combines a manageable loop with a specific destination along the way. If you’re choosing accommodation mainly with walks and religious sites in mind, this gives you a different point of reference from the swimming lake.

The Planet Trail in Hainburg’s Hainstadt district has a completely different theme: it illustrates the sizes and distances of the planets in the solar system. The route starts at Bächsteg, where a glowing sphere marks the Sun and the starting point. While the “Tree of the Year” trail is an approximately two-kilometre loop along named paths, the Planet Trail focuses on a visual representation of the solar system. When planning, you can therefore choose between a circular route through the forest and an educational trail with an astronomy theme.

The Main Cycle Route also passes through Hainburg on the Hessian Lower Main. If you’d like cycling to be a feature of your stay, the route’s location may be a factor when choosing a holiday apartment. Check the latest route details before setting off. Hainburg therefore offers several reasons to visit: the swimming lake for the 2026 season, trails with specific themes, and religious sites with an annual pilgrimage programme.

Culture in the wider Offenbach destination

In the wider Offenbach destination, Seligenstadt offers its own cultural highlights. The RegioMuseum features prehistory and early history, folklore, arts and crafts, paintings and sculptures from the 15th to 18th centuries, as well as the history of the town and Seligenstadt Abbey. The Palatium was built on the Main during the Hohenstaufen period and was probably erected by Emperor Barbarossa as a hunting lodge. These examples add museum and architectural history to the regional picture; Hainburg’s highlights described here remain the swimming lake, themed trails and pilgrimage sites.

Discover more destinations: Dudenhofen, Neu Isenburg, Heusenstamm, Seligenstadt, Offenbach Am Main, Dreieich, Rödermark, Obertshausen.

View the wider travel overview: Offenbach.