Cetti Bay, Tumon Bay Travel Guide

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Discover Guam's ancient past and natural beauty at Cetti Bay, a historical treasure nestled on the island's captivating southwestern coast.

Cetti Bay, a serene oceanic bay near Umatac, Guam, is a historical site on the National Register of Historic Places, offering stunning views and a glimpse into Guam's layered past, from ancient Chamorro settlements to Spanish colonial influence.

A brief summary to Cetti Bay

8M84+CXH, Humåtak, GU

From Eve

Know before you go

Hi, I'm Eve. Here are a few practical things to know before exploring Cetti Bay.

Wear comfortable shoes for exploring the rugged terrain and hiking trails around Cetti Bay.
Bring snorkeling gear to explore the vibrant marine life in the calm waters of the bay.
Visit early in the morning to enjoy the tranquility and stunning sunrise views.

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Explore Cetti Bay on the Map

A handpicked selection of must-see spots near Cetti Bay, mapped for you.

Getting There

Driving

From Tumon, take Marine Corps Drive (Route 1) south towards Agat. Continue until you reach Route 2A, then turn right. Follow Route 2A until you arrive at Cetti Bay. Parking areas are available for visitors. Car rentals are readily available at most hotels.
Public Transport

Take the Guam Regional Transit Authority (GRTA) bus towards Agat. Alight at the Agat bus stop and transfer to a connecting bus towards Cetti Bay. Check the bus schedules in advance. From the bus stop, it may be necessary to walk to the bay. A single bus fare is approximately $3.

Discover more about Cetti Bay

Cetti Bay, nestled on Guam's southwestern coast, is more than just a scenic vista; it's a journey through time. This historically significant bay, part of Guam's Territorial Seashore Park, offers a unique blend of natural beauty and cultural heritage. The bay's coastal area has been inhabited for approximately 3,000 years, with latte stones and pottery shards whispering tales of ancient Chamorro settlements. Known as Atte in ancient times, it was once a village that sided with rebel Chamorros during the Chamorro-Spanish Wars.The Spanish recognized the strategic importance of Cetti Bay, building a road system that connected Hagåtña to the south, passing through Cetti Bay en route to Umatac. The area's geological formations, including the pillow lava formations of Attelong Acho (Black Rock), are a testament to Guam's volcanic origins. The slopes surrounding the bay are covered in grassland, savanna, and a ravine forest that conceals Cetti Falls.Today, Cetti Bay invites visitors to explore its rich history and natural wonders. Hiking trails offer breathtaking views of the bay and surrounding landscape, while the calm waters are ideal for snorkeling and swimming. The Cetti Bay Overlook provides a panoramic perspective of the bay, the volcanic rock formations, and Cocos Island in the distance.