Museo Lacustre, Panajachel: Lake Atitlán's Underwater Maya Archaeology Museum and the Samabaj Room — Fee, Hours, Location

Lake Atitlán’s underwater-archaeology museum, the Museo Lacustre de Arqueología Maya Subacuática, is on the grounds of Hotel La Posada de Don Rodrigo at the end of Calle Santander in Panajachel; the Ministry of Culture’s undated directory lists it open daily 8:00 to 17:00 at Q35 for foreigners, Q30 for nationals and Q20 for students, and the hotel says entry is free for its guests.

In short: Walk to the end of Calle Santander, Panajachel’s main shopping and dining street, and ask at La Posada de Don Rodrigo. The museum’s centrepiece is the Samabaj room, built around a Maya settlement now under the lake. Fee and hours come only from the Ministry of Culture’s SIC directory, which is undated, so phone the hotel first; it lists (502) 7832-9858 and (502) 7762-2326.

Fee, hours and contact

The prices and the opening hours appear only in the SIC directory, the Ministry of Culture’s cultural information system, which does not date its listings (checked 9 November 2026). The hotel’s website, read on 9 November 2026, confirms that the museum exists and that hotel guests enter free, but it publishes no hours and no walk-in price. Ring or email before you make a special trip.

What the five rooms cover

The SIC directory says the museum was created to promote the archaeological heritage of Lake Atitlán. Its five rooms explain how the lake formed, the different types of volcanoes and the kinds of eruptions, and how the first people reached the lake. The main theme is underwater archaeology across three periods: Preclassic, Classic and Postclassic.

The hotel’s own description matches in outline, with displays on the history of Lake Atitlán and the volcanic activity that shaped its landscape.

According to the directory, the museum’s founder invested in underwater research after important finds of Maya pieces on the lake floor, and opened the first room with those pieces in 2000. The second room opened to the public on 2 December 2011.

The Samabaj room

The directory says the second room takes the visitor on a trip to the lake bottom and recreates the moment Samabaj was found: an ancient Maya city it describes as submerged for more than 1,700 years. On display are archaeological pieces recovered at the site, a scale model of the city and photo murals of the place. The directory calls the room an experience that lets you dive through the sunken city.

Wikipedia (Spanish, secondary source) adds the background. It describes Samabaj as an archaeological area under the lake, often called the Maya Atlantis, and says that in 1996 the diver Roberto Samayoa was exploring the lake when he found ceramic fragments and structures that looked man-made. The name joins sam, the first syllable of his surname, with the Maya word abaj, stone. About 2,000 years ago, the article says, a small island in the south of the lake held the settlement, which had three main groups of structures.

Getting in

The hotel describes its location as the end of Calle Santander, which it calls Panajachel’s main shopping and dining thoroughfare. The SIC directory gives the museum’s address simply as Calle Santander. The hotel’s line on access is short: “entrance is free for hotel guests”. For anyone else, the directory’s public prices are the published reference.

Neither source mentions guided tours, photography rules or wheelchair access. Ask the hotel when you call.

What to confirm before you walk over

Because the only published fee and hours are undated, a short call or email settles the points that matter:

• Today’s hours. The directory says 8:00 to 17:00, every day of the week.
• The walk-in price. The directory lists Q35 for foreigners, Q30 for nationals and Q20 for students; ask whether that still applies and whether students need a card.
• The Samabaj room. Ask whether the Samabaj room, which the directory says opened on 2 December 2011, is open on the day.
• Guest entry. If you are staying at La Posada de Don Rodrigo, the hotel’s own page says the museum is free for you.

How it fits a day in Panajachel

Because the museum is on Calle Santander, it fits before or after a boat across the lake. The Panajachel town page covers the town itself, and the village-hopping guide compares public lanchas with tours for reaching the other lake towns.

If the Samabaj room makes you want to see the lake floor, the scuba diving on Lake Atitlán page gives the dive operator, prices and sites; it does not cover Samabaj, and neither the SIC directory nor the hotel says the site is open to recreational divers. For time on the surface, see kayaking Lake Atitlán. The lake’s level today is tracked on the Lake Atitlán water level page.

Sources

• Ministerio de Cultura y Deportes, SIC directory listing, Museo Lacustre de Arqueología Maya Subacuática (undated): https://www.sicultura.gob.gt/directory-directorio_c/listing/museo-lacustre-del-lago-de-atitlan/ — read 9 November 2026.
• Hotel La Posada de Don Rodrigo, group website (Panajachel hotel description, address and phones): https://posadadedonrodrigo.com/ — read 9 November 2026.
• Hotel La Posada de Don Rodrigo Panajachel, Services and Amenities (Museo Lacustre, free for hotel guests): https://panajachel.posadadedonrodrigo.com/our-services/ — read 9 November 2026.
• Wikipedia (Spanish), Samabaj, secondary source (revision of 6 April 2026): https://es.wikipedia.org/wiki/Samabaj — read 9 November 2026.