Reims hands you its best on a free ticket: the coronation cathedral, the Saint-Rémi basilica and its museum all charge €0. Add a €1.90 tram, a €5 market baguette and hillside vineyard paths, and three days here cost less than one Paris day.
Entry to the nave is free daily 07:30–19:15. Arrive at 09:00 for eastern light through Chagall's 1974 blue windows in the axial chapel. The 2,303 statues and the Smiling Angel on the north portal cost nothing to study from outside.
The largest surviving Roman triumphal arch in the world (3rd century, 32 m wide) stands free at the edge of this public garden. Benches, shade and lawns make it Reims' default picnic room, two minutes from the Boulingrin market.
UNESCO-listed 11th-century basilica, 122 m long, free every day. The adjoining abbey museum is also free permanent-collection entry, holding Roman tombs, the Meuse tapestries and the abbey's Gothic cloister rooms.
The grassy mound above the Pommery and Ruinart cellars is public land. Walkers get open views over the basilica towers and the UNESCO-listed chalk crayères below, with zero fence, zero ticket and almost no visitors after 17:00.
The 1929 concrete-vault market (a Monument Historique) trades Wed, Fri and Sat mornings until 14:00. Chaource cheese runs about €4 a wedge, a tradition baguette €1.20, and stallholders sell rosé-de-Reims biscuits by weight at half boutique prices.
Eat the market haul on the lawns behind the Porte de Mars. Public toilets sit at the park's north entrance and the Boulingrin tram stop is 200 m away, so this is the cheapest sit-down lunch within the ring boulevards.
A 13th-century merchant house on the medieval market square, with a full set of Dürer's Apocalypse and Great Passion engravings. Guided-visit entry is around €6, and it sits above the free Cryptoportique, the Roman gallery under the square.
Reims' pedestrian drinking street runs 400 m from the Subé fountain to the theatre. Pints drop to roughly €4 and a coupe of Champagne to €6-7 between 17:00 and 19:00 at most terraces, versus €14 in a cellar tasting room.
One ticket costs €1.90 and covers an hour of tram and bus changes; a day pass is €4.30. Line A climbs from the station through Reims' northern hills, giving a moving city panorama for the price of a coffee.
A flat, free cycling and walking path runs along the canal from Parc de Champagne toward Sillery. Reims' Zébulle bike share costs about €1 for 30 minutes, so the ride to the first lock and back stays under €4.
Twenty-two hectares of sports lawns, a bandstand and pine walks laid out in 1911 by the Pommery family as a workers' park. It is free and open daily, with the best low-angle view back at the basilica from the eastern slope.
The schoolroom where Germany signed unconditional surrender on 7 May 1945, wall maps untouched since. Entry is around €5.50, free on the first Sunday of the month, and it is a 10-minute walk from the station.