Trelew is a city of 97,000 inhabitants in the lower Chubut River valley, founded in 1886 by Welsh settlers who had arrived 21 years earlier (1865) on the ship Mimosa to escape British cultural assimilation pressure on Wales. The name combines Welsh "Tre" (town) with "Lew" (short for Lewis, after Lewis Jones, the colony leader). Together with the older Welsh towns of Gaiman (1874) and Rawson (1865, today the provincial capital), Trelew anchors the unique Patagonian Welsh cultural region — the only place in the Americas where the Welsh language and traditions are preserved at scale, with about 20% of the local population having Welsh ancestry, bilingual schools, the annual National Eisteddfod music festival every October, and the famous Welsh tea-time ritual at historic chapels and tea houses. Beyond Welsh heritage, Trelew is internationally famous for the Egidio Feruglio Paleontological Museum (MEF), considered Argentina's premier dinosaur museum and one of the most important in South America. The MEF houses fossils of Patagotitan mayorum, the largest known dinosaur (40 meters long, 70 tons, 100 million years old, discovered 2014 in central Chubut), original Eoraptor fossils (230 million years, among the oldest dinosaurs known) and complete plesiosaur skeletons; modern interactive exhibits with real-size replicas attract over 100,000 visitors per year. The city also serves as the commercial gateway to central coastal Patagonia: Almirante Marcos A. Zar Airport (TRW) is the only one with regular flights from Buenos Aires (AEP-TRW, 2h, USD 80-200), making Trelew the practical base for visits to the Valdés Peninsula (UNESCO whale watching, 130 km north), Punta Tombo (the largest Magellanic penguin colony in South America, 165 km south), and Gaiman (Welsh tea-time, 17 km west). Trelew's downtown is functional rather than charming, but contains historic gems including the Capilla Tabernáculo (1880, the oldest Welsh chapel still in use), the Salesian Chapel (1899), the Plaza Independencia, and the regional history museum at the old railway station. Most visitors stay 1-2 nights in Trelew, using it as a launching point for Gaiman and Punta Tombo, while wildlife-focused travelers prefer beachfront Puerto Madryn 65 km north for whale watching access.
Getting there — distances & times
| From | Distance | Drive |
|---|---|---|
| TRW Airport | 5 km | 5 min |
| Gaiman | 17 km | 20 min |
| Puerto Madryn | 65 km | 50 min |
| Puerto Pirámides | 130 km | 1 h 45 |
| Punta Tombo | 165 km | 2 h 20 |
| Comodoro Rivadavia | 380 km | 4 h 30 |
| Bariloche | 815 km | 10 h |
Typical prices by category
| Item | Price |
|---|---|
| MEF Museum entry | USD 12 (foreign), USD 6 (Argentine) |
| Welsh tea-time at Gaiman | USD 25-40 |
| Hotel 3★ double | USD 65-110 |
| Boutique B&B double | USD 90-150 |
| Hostel double | USD 35-60 |
| Punta Tombo full-day tour | USD 95-130 |
| Gaiman half-day tour with tea | USD 45-75 |
| Buenos Aires flight (one way) | USD 80-200 |
| TRW Airport transfer | USD 8-15 |
| Argentine BBQ dinner | USD 18-30 |
2026 rates. MEF closed for inventory January 1-7. Welsh tea-time prices vary by tea house.
MEF — The Dinosaur Museum
The Egidio Feruglio Paleontological Museum is the centerpiece of Trelew. Highlights:
- Patagotitan mayorum: the world's largest dinosaur replica (40m). Discovered 2014, fully described 2017. Museum hosts original femur (2.4m, the largest dinosaur bone ever found).
- Eoraptor: one of the oldest dinosaurs (230 MA). Found in San Juan, displayed at MEF.
- Plesiosaur: complete marine reptile skeleton.
- Geologic time hall: walking tour through 4 billion years of Earth history.
- Live laboratory: public can watch paleontologists working on fossils.
- Interactive exhibits: for kids and adults. Bilingual EN/ES.
Open daily 9:00-19:00 (closed January 1-7 for annual inventory). Entry USD 12 foreign, USD 6 Argentine. Allow 2-3 hours. Audio guide available USD 4 extra.
Welsh Heritage in Trelew
Beyond the famous tea-time in Gaiman (17 km), Trelew has its own Welsh sights:
- Capilla Tabernáculo: 1880, the oldest Welsh chapel in town. Active. Sunday services in Welsh and Spanish.
- Casa de la Cultura: Welsh cultural center with library, language classes (you can sit in), exhibition.
- Plaza Independencia: the main square. Statue of John Murray Thomas (Welsh pioneer).
- Old Railway Station Museum: the 1880s railway connected Trelew to Puerto Madryn. Now a regional history museum.
- Eisteddfod festival: every October. Welsh music, poetry, choirs from international Welsh diaspora.
Tours and Excursions
Punta Tombo Penguin Tour
Full-day tour from Trelew to South America's largest Magellanic penguin colony. Walking trail among penguins. Lunch and bilingual guide included.
Gaiman Welsh Tea-Time Half Day
Visit to Welsh-founded Gaiman village, tour of historic chapels, tea-time at a famous tea house (8+ cake varieties). Transport from Trelew.
MEF Dinosaur Museum + City Tour
Guided MEF visit (skip-the-line entry) + Trelew historic walking tour: Welsh chapels, plaza, railway museum. Half day.
Combine with Other Chubut Sights
- Valdés Peninsula (130 km): UNESCO whale watching, sea lions, orcas at Punta Norte.
- Puerto Madryn (65 km): beachfront city, base for Valdés visits.
- Punta Tombo (165 km): South America's largest Magellanic penguin colony, September-March.
- Gaiman (17 km): authentic Welsh village with tea houses and historic chapels.
- Bryn Gwyn Geopark (40 km): outdoor paleontological park with Patagotitan replicas and Eocene fossil beds. Run by MEF.
See also: Puerto Madryn, Valdés Peninsula, Gaiman, Punta Tombo.
