Heidelberg Castle, Red Ruins Above the Neckar

If you have an extra day in Frankfurt, we recommend a trip to Heidelberg, a city on the banks of the Neckar River.

Nestled on the slopes of the forested Königstuhl hill, Heidelberg Castle, built from the red sandstone of the Neckar valley, overlooks the red-roofed old town and an ancient stone bridge below. This scenery has been cherished since the 19th century as a symbol of German Romanticism.

For a combined view of the castle and the old town, a relaxed day trip from Frankfurt is a great option.

Heidelberg Castle: A Legacy in Red Sandstone

Heidelberg Castle began as the residence of the Prince-Electors of the Palatinate in the 13th century and grew into a Renaissance palace. Although it suffered significant damage from wars in the 17th century and two lightning strikes in 1764, its ruined state inspired poets and painters.

From the castle's grand terrace, you get a panoramic view of the Neckar River and the rooftops of the old town. Inside the castle, you'll find the Heidelberg Tun (Grosses Fass), considered the world's largest wooden wine barrel.

The tours include castle admission and a visit to the wine barrel. Opting for a small group tour allows you to explore the castle's structure, courtyards, and ruins with a guide.

Cross the Old Bridge into the Old Town Alleys

The Old Bridge, connecting the old town with Neuenheim across the river, was built in 1788 during the reign of Prince-Elector Karl Theodor and is also known as the Karl Theodor Bridge. Walking across the sandstone bridge offers a layered view of the castle and old town from the other side of the river.

Within the old town, you can discover the Renaissance-style Knight's House, the Church of the Holy Spirit, Karlstor, and the historic Heidelberg University. Depending on the tour, you might stroll through the alleys with a guide or have free time to explore at your own pace.

The Philosopher's Walk: Views Across the River

On the Heiligenberg hill, north of the Neckar River, lies the Philosopher's Walk. Once a vineyard path, it earned its name as professors and philosophers would stroll here, gazing at the river in contemplation.

From this path, the old town, river, old bridge, and castle converge into a single frame. The sunny Philosopher's Garden hosts exotic plants. The ascent from the Old Bridge side is steep, so comfortable shoes are recommended.

Tour itineraries vary in terms of transportation and free time, so it's advisable to check the schedule beforehand. If you're seeking a landscape where the red castle harmonizes with the river, consider a trip from Frankfurt to Heidelberg.