That placement shapes the arrival. You come down into open, cultivated country in the Silao valley, and the town you flew for is not part of the view — it lies elsewhere, and higher. Getting to it means crossing the basin by road and climbing into the hills. That transfer is part of every plan made here, because the airport belongs to the region rather than to any one of its towns, and each of them sits a different distance away.
Where the world connects
Geography shapes what the airport is for. Del Bajío looks north: its international character is continental rather than transatlantic, and the links across the border into the United States are the ones that define it. From Europe the usual way in is a connection, through Mexico City or through a hub in the United States, before the last descent into the Bajío.
There is more than one way in. Mexico City and Querétaro are the alternative arrival points, with the last stretch by road. The Bajío is a farmed highland basin, though not a uniform plain — the farmland is broken by ridges and rising ground, and the road out of it climbs steadily toward the hills below Guanajuato.
The road goes under the town
Much of the traffic entering Guanajuato never crosses the town on the surface. It drops beneath it, funneling cars, delivery vans, and local buses into a network of stone tunnels, masonry vaults, and underground junctions. Popular travel accounts claim these underground streets began as abandoned silver shafts. They did not. They began with the Río Guanajuato, whose floodwaters drowned the valley settlement again and again through the eighteenth, nineteenth, and early twentieth centuries.
The engineering came in stages. The river was arched over in stone and finally shut into a covered conduit, with a street laid along the top of it; later, further tunnels were driven through the rock for traffic alone. What runs under the town today is part river, part road — a vaulted gallery carrying a roadway beneath the squares, extended by passages that never held water. Sending through-traffic below changes the surface: whole stretches of the center belong to people on foot, though the avenues on the valley floor still take cars and sound like it.
Altitude, slope, and season
Guanajuato is the capital of the state of the same name, wedged into a deep cleft in the hills. The settlement sits at about two thousand meters, climbing both walls of the ravine. The valley floor runs level enough to walk along; step off it in either direction and the lanes tilt, angling upward or ending in long flights of stone steps between stacked terraces of houses. What tires a new arrival here is the climbing rather than the altitude, though at this height the two work on you together.
The year divides into a wet half and a dry one. Rain runs from late spring through October, heaviest at the end of summer, and it tends to arrive in the afternoon and clear by dusk. The winter months are the dry ones, mild in the daytime and cold once the sun drops behind the ridge. October is also the month of the city’s international arts festival, when the historic center fills with travelers, performers, and students. Come in the wet months and you get a green ravine and an afternoon that clears; come later and you get dry light and company.
Why the ravine is inhabited
The ravine is the work of geology. What silver explains is why anyone settled in it. Rich outcrops of silver-bearing rock brought people into this awkward gorge, and the mines that followed — Valenciana among them, and it mattered enormously — paid for the churches, the civic buildings, and the stonework that fill the valley floor.
The houses stacked up the slopes, the narrow lanes between them, and the roads pushed underground are what a mining town looks like when it has to fit inside a canyon. In recognition of that architecture and that history, the historic town and its adjacent mines were inscribed on the UNESCO World Heritage list in 1988. To explore the pedestrian surface above the underground roads, see our companion guide to the stepped lanes, painted houses, and ravine alleys of Guanajuato.
Frequently Asked Questions
Which airport serves Guanajuato?
Aeropuerto Internacional de Guanajuato, widely known as Del Bajío (BJX). It stands at Silao, between León and the city of Guanajuato, and it is shared: León, Guanajuato, Silao, Irapuato, and San Miguel de Allende all use it. The city of Guanajuato has no airfield of its own.
Can you fly directly to Guanajuato from Europe?
Del Bajío’s international links run north rather than across the Atlantic, so a traveler from Europe normally arrives on a connection. The usual routings go through Mexico City or through a hub in the United States. The alternative is to land at another regional gateway, Querétaro among them, and finish the journey by road.
Why do roads run underground in Guanajuato?
They began as flood works. The Río Guanajuato repeatedly flooded the town, so it was arched over in stone and eventually shut into a covered conduit, with a street run along the top. Later tunnels were cut through the rock for traffic alone. The effect is that much of the through-traffic never reaches the surface, and a good deal of the center is left to people walking.
