St. Stephen's Basilica is a must-see landmark in Budapest, offering stunning architectural beauty and historical significance. The basilica is generally accessible, with ramps and elevators available, but it's wise to confirm accessibility details beforehand. Exploring solo is a great option to soak in the atmosphere, but guided tours provide deeper insights into the basilica's history and art. Be aware that during religious holidays, access may be limited or altered. Entry to the basilica is free, but there is a donation requested, and climbing the dome or visiting the treasury requires a paid ticket, costing approximately 800-2000 HUF per activity. A typical visit lasts around 1-2 hours, allowing time to appreciate the interior, climb the dome for panoramic views, and explore the treasury.