The stage goes up on Plaza de Recreo Rafael Hernández next Thursday, November 5. For four nights the square will run on salsa, merengue and trova. A short walk away, on Calle Manuel Corchado y Juarbe, there's a glass case holding the skull and vertebrae of a prehistoric aquatic reptile. Last November that building had not opened to the public yet.
When the 2025 Fiestas de San Carlos ran November 6 to 9 on Avenida San Carlos and Plaza Rafael Hernández, the Museo de Historia Natural y Conservación de Puerto Rico was still weeks away from its partial opening in December 2025. That makes this year's fiestas the first with a working science museum close enough to share the plaza's parking. The pueblo now has a full daytime program running during the same week as the fiestas, and a Saturday at the fiestas can start with fossils at 10 a.m.
A museum that began in an Aguadilla schoolyard
As El Nuevo Día reported, the idea took shape in 2015. That year a 10-year-old girl found a fossil oyster in her school's yard in Aguadilla, and her parents began to picture a natural history museum for the island. The museum credits its founding to the Torres Ramírez family. Its board lists Maribel Ramírez Toledo as president and names Jorge Vélez Juarbe and Hernán Santos Mercado as co-founders. The institution was legally incorporated in August 2022.
It's housed in the Edificio Archivo Histórico Haydeé Reichard, the town's historical archive building. That puts it in the old part of town, not on the coast road.
According to News is my Business, the museum has grown to five days a week since its December 2025 opening and drew about 1,200 visitors in July 2026. In August it won a $449,601 grant from the Institute of Museum and Library Services. It was one of eight projects chosen from 39 applicants for the 21st Century Museum Professionals program. The museum is matching the grant with $463,813.52 of its own, for a three-year total of $913,414.52 running September 1, 2026 through August 31, 2029. The money pays for staff and educator training in paleontological preparation, digital documentation, exhibit design and collections management. The museum has also signed more than 15 collaboration agreements, including with University of Puerto Rico campuses and Berlin's Museum für Naturkunde.
Those numbers matter on a fiestas weekend because they show the museum is still building out. A visit now catches it early, and the rooms will keep changing.
What is on the floor this fall
The museum lists two permanent exhibitions:
- Tierra Dinámica covers geological processes and the materials they produce.
- Flora borinqueniana traces the island's botanical history.
The museum's own photos show fossil dugong teeth and the aquatic-reptile skull and vertebrae. The museum hasn't said publicly which reptile species the skull belongs to, so don't promise the kids dinosaurs. A third room, Isla Viva, appears in the museum's online shop as a fundraising project. It's meant to connect Tierra Dinámica to Puerto Rico's marine and land ecosystems.
The geology on display has a local link. The U.S. Geological Survey describes the limestone karst belt across northwestern and north-central Puerto Rico, with Aguadilla near its western end. It also notes that the middle-Tertiary limestone of the north coast holds marine fossils, including from shallow-water reefs. That's the kind of rock the schoolyard oyster came from.
| Visitor detail | As posted by the museum |
|---|---|
| Address | 17 C. Manuel Corchado y Juarbe, Aguadilla 00603 |
| Hours | Wednesday through Sunday, 10 a.m. to 4 p.m., later on activity days |
| General admission | $10, ages 16 to 64 |
| Special admission | $8, ages 4 to 15, 65 and older, and veterans |
| Children 3 and under | Free |
The museum's event listings use a second address, 5 C. Progreso, and some individual exhibit pages show a shorter Wednesday-to-Saturday week. Check the museum's website before you go.
October built a Saturday-morning habit
The museum also hosts talks. Its October 2026 calendar had one every Saturday, most by university researchers on topics from Puerto Rico itself:
- October 3: Dr. Robert J. Mayer on 18 years of mangrove and dune restoration work.
- October 10: Hydrogeologist Jobel Villanueva on the north coast's limestone aquifer and where its groundwater reaches the sea.
- October 17: Prof. Sally González Miranda of UPR Mayagüez on heat waves and urban reforestation, with free trees for planting. A 2 p.m. session followed on chemistry and climate solutions.
- October 22, a Thursday: Dr. Reniel Rodríguez Ramos of UPR Utuado on new archaeometric studies of the Piedras del Padre Nazario, the carved stones found in Guayanilla in the late 19th century.
- October 31: Prof. Jeanine Vélez Gavilán of UPR Mayagüez on herbaria and plant conservation, with a plant-pressing demonstration, 10:30 a.m. to 12:30 p.m.
The herbarium talk falls this Saturday, two days after this post goes up. The talk's own page lists no price and doesn't ask anyone to register. Platea PR's October roundup lists the museum's October 31 "Fin de Semana de Cierre de Mes de la Historia Natural" as by donation. Talk discounts also come with membership. On the museum's ticket page, an individual membership takes 25% off talks, a VIP membership includes the museum's talks for free, and a family membership covers up to four talks a year.
As of October 24 the museum hadn't posted any November talks. If the Saturday series continues, it will run alongside the fiestas.
Four nights on Plaza Rafael Hernández
Platea PR's 2026 festival calendar lists the Fiestas de San Carlos de Aguadilla starting November 5, with free admission. The full program comes from a MiAgendaPR event listing. It runs the fiestas November 5 to 8 at the Plaza de Recreo Rafael Hernández, with food and local artisans alongside the stage.
| Night | Early sets | Late headliners |
|---|---|---|
| Thursday, Nov. 5 | 7:00 p.m. opening protocol, 7:30 p.m. Tuna de Cayey | 9:00 p.m. ORO, Creación Boricua; 11:00 p.m. iLe |
| Friday, Nov. 6 | 6:00 p.m. Orquesta del Areyto, 7:30 p.m. tribute to JLo | 9:30 p.m. Conjunto Quisqueya; 11:30 p.m. José Alberto "El Canario" |
| Saturday, Nov. 7 | 2:00 p.m. reinado and parade, 4:30 p.m. Señorío Ponceño, 6:00 p.m. Lissette | 7:30 p.m. Milly Quezada; 9:30 p.m. Gilberto Santa Rosa; 11:30 p.m. Tito Rodríguez Jr. |
| Sunday, Nov. 8 | 3:00 p.m. Atención Atención, 4:30 p.m. trovadores | 7:00 p.m. Los Guardiola; 8:30 p.m. Derek Novah; 10:00 p.m. Oscar de León |
This lineup comes from an event-listing site, not a municipal announcement, so check set times with the Municipio Autónomo de Aguadilla as the week gets closer. In 2025 the Municipio's Office of Culture, Tourism and Economic Development organized the fiestas, which also included a 5K, as AmaRie Magazine reported at the time.
The schedule fits around museum hours. The museum is open every day of the fiestas, Thursday through Sunday, from 10 a.m. to 4 p.m. The plaza program starts in the evening on Thursday and Friday and in the afternoon on the weekend. The weekend is when the two overlap. On Saturday the parade steps off at 2 p.m., two hours before the museum closes. On Sunday Atención Atención takes the stage at 3 p.m., an hour before closing.
One parking plan for both
The museum's contact page points visitors to three places to park. They're the same downtown spaces fiestas crowds will be looking for:
- The waterfront lots before or after the Highway 440 roundabout at the Aguadilla sign.
- The free parking between El Parterre and the boardwalk.
- The streets around Plaza Rafael Hernández.
The museum also posts a walking map. It starts near the beach, crosses Plaza Rafael Hernández Marín and ends at the museum's door, passing White Rabbit, Timber & Blues and Bridges Surf Beach. The plaza-side spaces are the closest to the stage, so if you plan to stay into the night, the waterfront lots by the PR-440 roundabout leave you a walk you already know. On the headline nights, give yourself extra time.
On Saturday, November 7, you can do both. Park on the waterfront in the morning and walk the museum's route to Calle Manuel Corchado y Juarbe. See Tierra Dinámica and the reptile skull before noon, then be on the plaza for the 2 p.m. reinado and parade. Stay through Milly Quezada at 7:30 and Gilberto Santa Rosa at 9:30.
A museum in the old historical archive building, open five days a week, is a new kind of neighbor for the plaza that hosts San Carlos every November. Coldwell Banker Puerto Rico keeps up with these north-coast and west-coast changes for clients who want to know a town as residents do. To talk through what's changing in Aguadilla, request a private consultation with Coldwell Banker Puerto Rico.
