Karlovy Vary

Walk south along the riverside promenade past the wooden Market Colonnade — 5 minutes brings you to the brutalist 1970s glass pavilion that shelters Vřídlo, Karlovy Vary's mightiest spring. A 12-meter geyser of 73°C water shoots toward the ceiling every minute or two; fill your porcelain cup at the cooled-down taps along the wall and taste the intensely salty, sulfurous water that has drawn 600 years of European nobility here for the cure. Step outside afterward to photograph the baroque Church of St. Mary Magdalene perched on the hillside directly above.

Tip: Spring #5 (the hottest cooled tap inside the pavilion) is what the locals actually drink — start with #1 if you want a gentler introduction before working up to the strong stuff. Never photograph the geyser with flash; the mineral spray fogs lenses within seconds and is brutal to clean off.

Walk back 3 minutes north along Lázeňská street to Mefisto — a vaulted Czech bistro tucked between the colonnades where locals use the lunch special as their everyday meal. Order svíčková na smetaně (marinated beef in cream sauce with bread dumplings, €13) and the house dark beer (€3); the kitchen turns plates in under 20 minutes so you'll be back on your feet before the afternoon climb.

Tip: Avoid the trdelník stands along the colonnade — it's a Hungarian export sold to tourists, not actually Czech. If you're in a real hurry, order smažený sýr (fried Edam with tartar sauce, €8) which arrives in 10 minutes flat and is heavy enough to fuel the Diana climb.

Walk south along the Teplá river — the buildings turn grander and the trees taller, until after 8 minutes the cream-and-gold facade of Grandhotel Pupp opens onto Mírové náměstí. Daniel Craig walked through these doors as James Bond in Casino Royale; the lobby is open to non-guests and Becher's Bar inside will pour you a Becherovka neat (€5) on the exact spot where the film was shot. From the front terrace, the entire valley opens to the south — your last flat ground before the climb to Diana.

Tip: Frame the hotel's full curving facade from the small park across Mírové náměstí — the entrance steps cut off the building's most elegant wing. Do not eat dinner at the Grandrestaurant inside; its tourist menu is wildly overpriced and you'll eat far better at Embassy two bridges away.

Behind Pupp, the Stag's Leap trail enters beech forest and climbs in switchbacks for 30 minutes — halfway up, the iron stag statue at Jelení skok viewpoint commands a sweeping panorama, with the colonnades unspooling below as pale ribbons along the river. Continue 15 minutes uphill to Diana Lookout Tower; climb the 150 spiral steps to the 35-meter platform for a 360° view in afternoon golden light. Take the 1912 funicular back down to the Mariánské lázně station beside Pupp — the wooden cabin still smells of a century of varnish.

Tip: Catch the last funicular down at 18:00 in summer (17:00 in spring/autumn) — miss it and the forest descent gets dark fast under the canopy. Photograph the iron stag from the path below looking up so it silhouettes against open sky, not from the lookout platform above where it disappears against the trees.

From the funicular station, cross the small footbridge over the Teplá — Embassy is 100 meters along Nová louka, in a 19th-century townhouse where spa-cure nobility once dined and the Frühauf family has cooked since 1985. Order pečená kachna (slow-roasted duck with red cabbage and bramboráky potato pancakes, €22) and finish with chilled Becherovka (€4), the herbal liqueur invented two blocks from this table in 1807. The Moravian whites on the wine list never leave the Czech Republic.

Tip: Reserve by phone the day before in peak season (July film festival, summer weekends) — there are only 12 tables and they fill nightly. Ask for a window seat over the river bend at dusk. Final warning for the walk back to your hotel: along Stará louka and Mírové náměstí, avoid any restaurant with English-language menus on easels outside and a host hovering at the door — they target tour groups with €40 'Czech specialty platters' that are microwaved and double the local rate.

Walk south along the river promenade for 4 minutes, passing the white wooden Market Colonnade on your left (peek inside at the smallest Charles IV Spring where the town's founding legend is engraved). The brutalist 1975 glass hall ahead houses Vřídlo — a 12-meter column of 73°C mineral water erupting from a fissure 2,000 meters below the earth, the most powerful thermal geyser in continental Europe and the reason every other spring exists.

Tip: Stand on the left side facing the geyser column — the steam drifts right and you'll get the unobstructed shot. Downstairs there's a free spa hall with five drinking taps of the actual Vřídlo water (much hotter and saltier than the colonnade taps above) — bring your porcelain cup; the small ones can't hold the heat.

From the Hot Spring Colonnade, walk 4 minutes uphill on Zámecký vrch — the cobbled street curling toward the old castle tower — to this wood-paneled tavern in a 16th-century cellar. Order the svíčková na smetaně (beef sirloin in cream sauce with bread dumplings and cranberries, €11) and a 0.5L Pilsner Urquell from the tank (€2.50); finish with hot apple strudel. This is the exact hearty meal Karlovy Vary's spa guests have eaten for two centuries before walking it off along the colonnades.

Tip: Skip the English-menu places along Stará Louka where the same svíčková costs €25; here the Czech menu tops out at €15. Ask for a window seat in the upper room looking down over the colonnade rooftops — only four of them and they go first.

Walk down the stone staircase from Sklípek and cross Kostelní náměstí — 3 minutes to the twin onion-domed Baroque towers. Built 1733-1736 by Kilian Ignaz Dientzenhofer (the master behind Prague's St. Nicholas), this is the finest high Bohemian Baroque outside the capital — the oval nave, the trompe-l'œil ceiling, the pink-veined marble altar. Most visitors stop in the nave for five minutes and leave; the real reward is the lower chapel below.

Tip: The 14th-century crypt below the church — bone reliquaries, vaulted brick, complete acoustic isolation — is reached through an unmarked side door on the right of the altar (50 CZK / €2). Almost no tourists find it. If you hear the organist practicing upstairs, stay until they finish a piece — the acoustics under the dome are extraordinary.

Walk north along the river promenade for 15 minutes — you'll see the green Becherovka bottle motif on shop fronts, lampposts, even manhole covers — to the original 1867 distillery on T. G. Masaryka. The guided 90-minute tour walks you through the locked secret room (only two living people know the full herbal recipe), the cellar of oak aging barrels, the original 19th-century bottling line, and ends in a tasting room with four Becherovka varieties: the original 38% bitter, KV14 (the new sharper one), Cordial, and Lemond.

Tip: Book the English tour slot online the night before — 15:00 is the last departure and walk-ins after 16:00 are turned away. The 'Jan Becher 1807' premium bottle in the gift shop is €25, identical to Prague Airport duty-free, so this is the better place to buy — they vacuum-seal it for your suitcase.

Walk back south along the Teplá river for 12 minutes — magical at dusk when the colonnades light up from within and the steam ghosts off the warmest springs — to this elegant restaurant just above the Market Colonnade. Long considered the finest in the historic spa quarter, the kitchen marries Czech classics with French technique: the venison goulash with cranberries and forest mushrooms (€26), the wild boar medallions with juniper sauce (€28), and the apricot dumplings with browned butter and curd (€9) are the ones locals plan birthdays around.

Tip: Reserve three days ahead — there are only 14 tables. Two pitfalls to dodge before you go: (1) avoid the souvenir shops on Stará Louka selling 'hand-painted' porcelain spa cups for €25; the exact same cups (same local workshop) sit in the colonnade kiosks for €6-8. (2) Skip the 'massage parlors' along the promenade quoting €30 and adding €40 in 'oil supplements' at the end — book only at a real hotel spa.