Mont St. Michel

Placement requirements

• Must be built on: Floodplains, Grassland Floodplains, Plains Floodplains, Marsh

Unlock & cost

• Civic: Divine Right
• Production cost: 710

Wonders that compete for the same tiles

From the placement data: these wonders share a placement requirement with Mont St. Michel. A city meant to hold both needs a separate qualifying tile for each.

• Etemenanki — both allowed on Floodplains, Grassland Floodplains, Plains Floodplains, Marsh
• Great Bath — both allowed on Floodplains, Grassland Floodplains, Plains Floodplains
• Petra — both allowed on Floodplains
• Pyramids — both allowed on Floodplains

Is it worth building?

All your apostles gain the martyr ability, so every one that falls in battle becomes a relic. Combined with relic-tourism beliefs it converts theological defeats into income — a uniquely loss-proof wonder.

Placement & timing tips

Floodplains or marsh — an awkward tile you probably weren't using anyway. Essential for relic strategies (Kandy suzerainty, Reliquaries); optional otherwise.

When to build it — and when not to

Build it when

Build when Reliquaries is your belief or Kandy is your friend, and you expect apostles to die anyway — deliberately feeding weak apostles into losing fights becomes a tourism production line.

Skip it when

Skip without a relic multiplier in place — bare relics trickle. If Divine Right-era hammers want a culture payoff, a Theater Square with an Art Museum builds toward theming instead.

Which city should build it

The site is deliberately unglamorous, a floodplain or marsh, and since the Martyr effect is empire-wide the wonder can sit wherever such a tile survives. Two considerations pick the city. First, tourism from the relics it holds is boosted by city-level multipliers like Pingala's Curator promotion, so a marsh inside your culture capital beats one in a swamp town. Second, the tile choices collide with other plans: the same floodplains are what the Great Bath and Etemenanki want, and marshes are usually drained by builders early, so mark one to keep. A river city that already hosts a Holy Site and a Theater Square, with a leftover marsh in its third ring, is the archetype. Production is rarely the issue, because relic strategies run through faith-rich cities that can afford to carry a medieval build for a while.

Winning the race

Almost uncontested. Divine Right is off the AI's main route, a marsh or floodplain has to survive inside the borders, and the AI rates this wonder low; even religious leaders usually turn to it only after Hagia Sophia and Mahabodhi are done, so it commonly lasts into the renaissance. Time the start to your relic multipliers rather than to any rival: begin after Reliquaries is chosen or Kandy's suzerainty is secured, because built earlier it only holds empty relic slots. Save chops and Great Engineers; the city's own hammers plus Gothic Architecture are enough. The warning signs, such as they are, come from the strategy rather than the race: losing Kandy's suzerainty, or another founder locking Reliquaries first. At that point the wonder is not the problem and the whole relic plan needs rethinking.

If you lose it: alternatives

Martyr is already on the apostle promotion list, so without the wonder you simply pick it whenever it is offered; the only difference is that you depend on the draw. Relics themselves come from Kandy's suzerainty each time a natural wonder is found, and relic slots appear in every Temple, so a Temple in each city removes the storage problem as well. In other words, once the multipliers are in place, Mont St. Michel is a convenience for the relic pipeline, not a requirement. Put the freed hammers into those Temples and into Theater Squares, since relic tourism rides the same modifiers as every other Great Work and Theater Square buildings raise the whole ledger. If there was never a relic multiplier to begin with, skip even these substitutes and move on to the next wonder.

Other wonders of the same era

• Alhambra
• Angkor Wat
• Chichen Itza
• Hagia Sophia
• Huey Teocalli
• Kilwa Kisiwani
• Kotoku-in
• Meenakshi Temple
• University of Sankore

Related guides

• Wonder Priorities by Era: When to Contest, When to Let GoAn era-by-era framework for wonder decisions in Gathering Storm: which races are worth entering under each victory plan, how to read whether the AI will beat you, and what to build instead when you pass.Last reviewed: 2026-10-03
• Industrial Zones and Production Planning: Adjacency, Regional Reach, Power, and ChopsHow production actually gets made in Gathering Storm: what feeds Industrial Zone adjacency, how one Factory serves several cities, when power starts to matter, how to chop without wrecking appeal, and the sequencing mistakes that cost the most.Last reviewed: 2026-10-03
• Early District Planning: The First 100 TurnsHow to read city sites for future adjacency, decide between settling for yields now or reserving tile clusters, and know when a planned layout should be abandoned.Last reviewed: 2026-10-03