Thunder Bay National Marine Sanctuary

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NOAA’s Thunder Bay National Marine Sanctuary offices, and visitor center, the Great Lakes Maritime Heritage Center are located at:

500 W. Fletcher 
Alpena, Michigan 49707
Fax: 989-354-0144

Office Hours:  M-F, 8:30 am to 5:00 pm, Closed on Federal Holidays

The visitor center is FREE and open all year

Summer hours begin Memorial Day Weekend: 9:00 am - 5:00 pm, Mon-Sun

July & August extended evening hours, open until 7:00 pm daily

Winter hours begin 2nd Monday in October: 10:00 am - 5:00, pm Mon-Sat 

The visitor center is closed: Thanksgiving Day, Christmas Day, and New Year's Day

Get Directions to the sanctuary visitor center, located in the pleasant lake front community of Alpena, Sanctuary of the Great Lakes!

Sanctuary staff work to actively promote uses of sanctuary resources that are compatible with sanctuary resource protection; in fact, all National Marine Sanctuaries promote multiple uses.

Access to sanctuary shipwrecks is not restricted. The range of depth of the shipwrecks appeals to a variety of diver skill levels and also provides recreational opportunities for non-divers.

Great Lakes Maritime Heritage Center Brochure

Explore Your Sanctuary Brochure

Michigan Sea Grant Coastal Tourism Fact Sheets - Plan Your Tour!

 The sanctuary hosts programs and events throughout the year.  Check ourcalendar to see what’s coming up!  Or request a special program for your group:

Group Visit Form

Student Group Visit Form


Annual Thunder Bay International Film Festival

Annual Great Lakes Regional MATE ROV Competition

Annual Thunder Bay Maritime Festival


Visitor Information

Michigan Historical Museum System


National Oceanic and Atmospheric Administration

Revised March 16, 2015 by TBNMS Webmaster | Web site owner - National Ocean Service
National Marine Sanctuary Program
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wreck coordinates Great Lakes Maritime Heritage Center