Heidelberg is one of Germany’s most visited cities for a reason: a ruined Renaissance castle looming over a perfectly preserved Baroque Altstadt (Old Town), Germany’s oldest university (founded 1386), and the Neckar river winding through wooded hills. The city inspired the Romantic movement in the 19th century and continues to draw visitors with a compact historic centre that can be explored on foot. This guide covers the essential sights with practical details on tickets, hours, and the best times to visit each. For seasonal timing advice, check the best time to visit Heidelberg guide.
Things to Do in Heidelberg: The Castle and Funicular
Heidelberg Castle (Schloss Heidelberg)
The red sandstone ruin that defines Heidelberg’s skyline. Construction began around 1214 and continued for 400 years, with each Elector Palatine adding wings in the architectural style of his era, from Gothic to Renaissance. The castle was devastated by French troops in 1689 and 1693 during the War of the Palatine Succession, then struck by lightning in 1764, after which it was abandoned as a residence. The Romantic poets of the 19th century (Goethe, Holderlin, Mark Twain) rediscovered it as a sublime ruin.
The castle courtyard (Schlosshof) is free to enter and offers panoramic views over the Altstadt. The guided interior tour (6 euros, English tours at 11:15, 12:15, 14:15, and 15:15 daily) takes you inside the restored Friedrichsbau and Ottheinrichsbau wings. The tour is the only way to see the interior rooms and is worth it for the Renaissance facade details and the history of the Wittelsbach dynasty. The German Apothecary Museum (Deutsches Apotheken-Museum) inside the castle is included in the tour and displays a 2,000-year pharmaceutical history collection with reconstructed 18th-century pharmacy interiors. The Grosses Fass (Great Barrel), a 220,000-litre wine cask built in 1751, sits in the castle cellar and requires a separate 2-euro entry. There is a dance floor on top of the barrel.
Funicular (Bergbahn): Runs from Kornmarkt station in the Altstadt to the castle (first stop), then continues to Molkenkur and the Konigstuhl summit (568 metres). The castle return ticket costs 9 euros and includes courtyard entry and the barrel cellar. The full summit return costs 14 euros. The funicular runs daily from 9:00; last descent from the castle at 17:20 (winter) or 20:20 (summer). The walk up to the castle via the Burgweg staircase takes 15 minutes and is free.
Things to Do in Heidelberg: The Altstadt (Old Town)
Hauptstrasse
At 1.6 km, the longest pedestrian shopping street in Germany. It runs from Bismarckplatz in the west to Karlstor in the east, lined with Baroque buildings housing shops, cafes, and restaurants. The section between Universitatsplatz and Marktplatz is the most historic, with the Church of the Holy Spirit (Heiliggeistkirche, free entry, tower 2 euros) and the Hotel zum Ritter (built 1592, the oldest surviving secular building in Heidelberg) as landmarks. The Hauptstrasse is extremely crowded on Saturday afternoons; visit weekday mornings for a more pleasant experience.
Studentenkarzer (Student Prison)
One of Heidelberg’s quirkiest attractions: from 1778 to 1914, the university operated its own jail for student miscreants. Offenses that landed you here included public drunkenness, dueling, releasing pigs in the university halls, and disrupting lectures. The cells are covered in graffiti, portraits, and poems left by generations of imprisoned students. Entry is via the Alte Universitat building on Grabengasse (3 euros, combined with the University Museum). Open Tuesday to Sunday 10:00 to 16:00 (until 18:00 April to October). The museum covers the university’s 600-year history, including its role as a centre of German liberalism in the 19th century.
Things to Do in Heidelberg: Outdoors and Views
Philosophenweg (Philosopher’s Walk)
The most famous walk in Heidelberg. The path climbs the northern bank of the Neckar opposite the Altstadt, offering the classic postcard view of the castle, Old Bridge (Alte Brucke), and red-roofed old town backed by the Konigstuhl hill. The walk takes about 45 minutes from the Old Bridge up through vineyards and Mediterranean gardens (palm trees, cypresses, agaves survive here thanks to the valley microclimate) to the Philosophengartchen (Philosopher’s Garden), a terrace with the best views. Free. Best at sunset. The climb is about 100 metres of elevation gain on a paved path; sturdy shoes help.
Alte Brucke (Old Bridge)
The 1788 sandstone bridge with its distinctive twin-towered gate is Heidelberg’s second icon after the castle. The bridge is pedestrian-only and offers castle views upriver. The bronze monkey statue (Bruckenaffe) on the south tower holds a mirror; local tradition says touching the mirror brings wealth and touching the monkey’s fingers ensures your return to Heidelberg. The bridge is at its quietest before 9:00 and most photogenic at sunrise when the castle glows red.
Neckarwiese (Neckar Meadow)
A 2-km riverside park on the north bank, Heidelberg’s summer living room. From May to September, it fills with students barbecuing (grills permitted), sunbathing, and playing Frisbee. The water is clean enough for swimming (no official beach or lifeguard; enter at own risk). Temperatures reach 22 degrees C (72 degrees F) in August. The Biergarten at the western end serves beer and pretzels from April to October. Free 24/7. The Heidelberg neighborhoods guide covers more outdoor spots.
