Arrive in Old Town Square around 11:00, where the Gothic towers, pastel façades, and crowds give you an immediate sense of Prague. Stand beneath the Astronomical Clock for its short hourly show—charming rather than spectacular, so treat it as a quick starting point rather than a major attraction. Allow about 45 minutes, and keep phones and wallets secure in the busiest area. From here, walk roughly 8 minutes along Dlouhá Street to Lokál Dlouhá, a lively Czech beer-hall-style restaurant; book ahead if possible, especially on Saturday. Expect about €10–18 per person for filling dishes such as schnitzel, goulash, or fried cheese, with quick service making it a good choice for teenagers.
After lunch, walk 7–10 minutes to the Museum of Senses, which is usually open daily into the evening; check the exact September hours and current admission online, with tickets generally around CZK 300–350. The interactive rooms and optical illusions take about an hour and are particularly good for group photos. Continue on foot for approximately 15 minutes toward Charles Bridge, arriving from the Old Town side. Cross slowly—allow 45 minutes for the statues, musicians, river views, and glimpses of Prague Castle—then descend into Kampa Park on the Malá Strana end. Spend about an hour by the water and look for the famous Giant Babies sculptures by David Černý. This section is best explored on foot; avoid taxis in the historic center, where walking is faster and more enjoyable.
From Kampa Park, walk back toward the river and take a tram or metro connection toward Náplavka; allow roughly 20–30 minutes depending on the connection, or around 30 minutes on foot if everyone still has energy. Finish at the Náplavka Farmers’ Market, where Saturday stalls typically run along the riverfront from morning into the afternoon, while the embankment’s food stands and casual atmosphere often continue into the evening. Because the market schedule can change, verify the date before relying on it; if the stalls are closing, there are still riverfront cafés and bars nearby. Bring some Czech koruna for smaller vendors, and plan to leave around 19:30–20:00 after about 1½ hours.
Start around 9:00 at Prague Castle, entering from Pohořelec or Hradčanské náměstí. Allow roughly 2½ hours for the courtyards, St. Vitus Cathedral, Golden Lane, and the castle interiors; booking a timed circuit online is wise, especially on a Sunday. The grounds open early, while the historic buildings generally open around 9:00, with tickets commonly costing about €10–18 depending on the circuit. Wear comfortable shoes—the complex is large, cobbled, and slightly uphill. Afterward, walk a few minutes to Kuchyň for lunch; reserve if possible and ask for a terrace table, since the views over Prague are part of the experience. Expect about €15–25 per person for a relaxed Czech meal.
From Kuchyň, walk down through Malá Strana toward Újezd and take the Petřín Funicular up the hill if it is operating; the ride is covered by Prague’s public-transport ticket, while a 30-minute ticket costs roughly €1.30. Check the live status before setting off, as maintenance closures are fairly common. Spend around 1½ hours wandering the gardens and viewpoints on Petřín Hill—this is a good place for a slower, active break after the castle. Then take tram 12 or 20 from Újezd toward Nádraží Holešovice, continue by bus 234 to Zoologická zahrada, and allow about 35–45 minutes door to door. At Prague Zoo, focus on the hillside sections, elephant valley, and the African and Indonesian areas; teenagers usually enjoy the variety more than trying to cover every enclosure. It is open daily, generally from 9:00 to 18:00 in September, with admission around €12–15, but check the closing time and allow at least 2½ hours.
From Prague Zoo, take bus 234 back toward Nádraží Holešovice, then metro C to Muzeum and metro B to Anděl—roughly 35–45 minutes depending on connections. Finish at Manifesto Market Anděl, where different stalls make dinner easy for a group with mixed tastes: budget about €10–20 per person. It is casual, lively, and particularly convenient for teenagers, with outdoor seating and food ranging from burgers and tacos to Asian dishes and desserts. September evenings can cool quickly, so bring a light layer; check the market’s current Sunday opening hours before going, as individual stalls and seasonal schedules vary.