Visegrád Citadel offers incredible Danube Bend views and it's totally doable by public transport.

Route: Train from Budapest-Nyugati to Nagymaros-Visegrád (1 hour, 600 HUF), then 5-minute ferry across Danube (300 HUF).

Hike to citadel ruins takes 30-45 minutes - steep but worth it. Entry 1800 HUF. Royal palace at hill bottom if you want more history.

Trains run every 1-2 hours. Last return: 8 PM summer, 6 PM winter. Bring water and proper shoes - it's basically a mountain trail.

Total cost under 3000 HUF vs 15000+ HUF tour groups.