St. Vitus Cathedral

St. Vitus Cathedral is Prague's Gothic masterpiece, a towering spire that took 600 years to finish and houses Czech kings in its crypt. You'll walk through soaring stone arches where colored light streams through medieval stained glass, including Alphonse Mucha's Art Nouveau window depicting Saints Cyril and Methodius. The Chapel of St. Wenceslas glitters with semi-precious stones covering every wall, while the royal tombs below hold Charles IV and Rudolf II.

The nave feels impossibly tall and hushed, with tourists craning their necks at the ribbed vaulting overhead. Most people cluster around the Mucha window (third on the left as you enter), but the real showstopper is St. Wenceslas Chapel, where every surface sparkles with jasper, amethyst, and gold leaf. If you buy the full circuit ticket, the tower climb gets progressively narrower until you're squeezing through medieval stone passages to emerge 287 steps later with panoramic views over red rooftops.

Here's what most guides won't tell you: the nave is completely free, so don't feel pressured to buy the 250 CZK circuit ticket unless you specifically want the tower climb and Wenceslas Chapel access. The crypt is interesting but skippable unless you're obsessed with Habsburg history. Morning light makes the stained glass absolutely sing, while afternoon visits feel dim and gloomy.