Archivo Histórico de Las Merindades

Archivo Histórico de Las Merindades is a historic archive on the Plaza Mayor in Villarcayo, the seat of the municipality of Villarcayo de Merindad de Castilla la Vieja in the province of Burgos. It ranks as the second most important historical archive in the whole province, surpassed only by the one held in the city of Burgos itself.

What does the archive hold?

The building safeguards three distinct document collections. The oldest and largest is the Archivo del Corregimiento, comprising 2,342 paper documentary units spanning 1523 to 1874 and tracing the history of all seven merindades, the historic administrative districts of Old Castile. The second collection belongs to Villarcayo itself, with records concerning the town exclusively, dating back to 1510. The third is the archive of the Merindad de Castilla la Vieja, made up of 138 bundles of files from 1608 to 1819.

Why is this place significant?

The archive's own story mirrors the turbulent history of the region. In 1560, King Philip II transferred the capital of the Seven Merindades from Medina de Pomar to Villarcayo — a decision that permanently shaped the town's role as the region's administrative center. The Merindad de Castilla la Vieja collection was moved to Cigüenza in 1835, when Villarcayo administratively separated from its merindad. It wasn't until 1975, following municipal reunification, that the documents returned to Villarcayo, where they remain to this day.

How do you get there?

The archive sits right in the heart of town, at Plaza Mayor 17 in Villarcayo. This makes it a central landmark of Las Merindades, a region in the northern part of Burgos province well connected by road both to the city of Burgos and to Cantabria. Villarcayo lies along routes heading toward the Ebro Valley and the Cantabrian coast, making it a convenient stop on a longer trip through northern Spain.

What will you see on site?

Visitors can consult documents during the office's regular service hours or arrange a guided tour, either individually or in groups — schools, universities, and associations are all welcome to book. The files themselves — books of municipal agreements, census records, a 16th-century land survey, and municipal accounts — offer a rare close-up look at how Castilian administration actually functioned centuries ago.

When should you visit?

The archive is open Monday to Friday from 10:00 to 14:00, and Saturdays from 10:00 to 14:00 and 18:00 to 20:00. From February onward, aside from public holidays, long weekends, Holy Week, and the period from July 15 through the end of August, the archive — like the tourism office sharing the same building — closes on Sundays. It's worth confirming current hours before a visit, especially outside the summer season.

Frequently asked questions

Do I need to book a visit in advance? For a guided tour, yes — it's best to contact the tourism office housed in the same building, during its opening hours. Simply consulting documents during the archive's normal service hours doesn't require prior booking.

What kind of documents can I find there? The oldest date back to the early 16th century and include census records, books of municipal agreements, financial accounts, and bundles of files from the Merindad de Castilla la Vieja.

Is this the only historical attraction in Villarcayo? No — the town served for centuries as the administrative capital of the Seven Merindades, so the area around Plaza Mayor holds other traces of that past too, though the archive remains one of the key stops for anyone interested in the region's history.

Is admission free? Document consultation and general visits are part of the archive's public service — it's worth confirming directly with the tourism office at Plaza Mayor whether any fees apply for organized group tours.