Place des Vosges is the oldest planned square in Paris, a perfect symmetry of red brick and cream stone facades built under Henri IV and completed in 1612. Free. Thirty-six matching houses, all the same height, sit above continuous arcades that run around all four sides, so you can walk the whole square under cover when it rains. In the middle is a formal public garden with fountains, clipped trees, and benches, and it costs nothing to sit in.
The square is the centrepiece of Le Marais, the historic quarter that Haussmann’s demolitions largely skipped, so it is an easy free anchor for a budget walk. On one corner stands the Maison de Victor Hugo, in the apartment where the writer lived for sixteen years, and its permanent collection is free to enter. A few streets away, the Musee Carnavalet, the museum of the history of Paris, is also free to enter, which makes this small patch of Paris one of the best-value corners in the city: a free square, a free writer’s house, and a free museum within a short walk of each other.
Budget travelers come here to do what locals do. Buy a baguette or a falafel from the nearby rue des Rosiers, carry it into the garden, and eat it on a bench under the lime trees. The square was originally called Place Royale and only took the name Place des Vosges in 1800, when the Vosges department became the first to pay its revolutionary taxes. Knowing that costs nothing either, and it is the kind of detail that turns a quick photo stop into a proper visit.