3 Ways to Explore Hassel Island off St. Thomas

Join the Only Guided Tour of Hassel Island

For history lovers and first-time visitors to St. Thomas, a guided tour with the St. Thomas Historical Trust is the most informative way to explore 135-acre Hassel Island. As the only organization authorized to conduct island tours, the Trust offers a carefully curated walking experience that brings centuries of history into focus.

Once ashore after a quick boat ride from the Charlotte Amalie Habor waterfront, history and scenery unfold at every turn. Guides share stories about Hassel Island’s past, tracing its role during the Danish and British colonial era, its military significance and its evolution into a historic site operated by the National Park Service. Knowledgeable guides trained by the St. Thomas Historical Trust lead visitors through preserved ruins and along forest trails, telling tales along the way.

Highlights include:

Fort Willoughby aka Prince Frederik’s Battery: Remains of a dramatic fort with harbor views

Garrison House: Once used to house British soldiers during the Napoleonic Wars

Creque Marine Railway: One of the oldest surviving marine railways in the Caribbean

Cowell’s Battery and Signal Station: The highest point on the island at 267 feet above sea level, offering panoramic vistas of St. Thomas, Water Island and the surrounding Caribbean Sea

Book your Hassel Island tour in advance (reservations fill up quickly). The 3-hour tour involves moderate walking on uneven terrain, so wear comfortable, sturdy walking shoes. Sun protection and drinking water are essential. Tour proceeds support the St. Thomas Historical Trust and its museum.

Explore on Your Own by Boat or Water Taxi

Inquire at Crown Bay Marina about hiring a private boat or water taxi to explore Hassel Island at your own pace. Local operators provide drop-off and pick-up service, making it easy to plan a half- or full-day adventure. Be aware that there are no facilities or services on the island. Bring water, snacks and a map or download a Hassel Island trail map before arriving.

Kayak from Frenchtown

For those seeking an active way to get to Hassel Island, renting a kayak is a popular option. Outfitters include Frenchtown Backyard. The paddle to Hassel Island is short and the waters are typically calm.

After landing your kayak, hike Hassel Island’s coastal and inland trails that wind past ruins and through tropical vegetation. Afterward, snorkel in protected coves known for clear waters and colorful marine life, then relax along the shoreline and enjoy the picturesque harbor views.

Set out early in the day for calmer waters and cooler temperatures. Use waterproof bags for your valuables and electronics, wear reef-safe sunscreen to help protect the marine ecosystems and stay on established trails. Leave no trace of your visit behind.

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