Chocolate lovers can soothe their cravings as Harvard Square businesses fill their stores, restaurants, and displays with chocolate treats this weekend.

Chocolate Treasure Hunt

Saturday, Jan. 29: 10 a.m. to 5 p.m.

Deguglielmo Plaza, 27 Brattle St.

Purchase a map for $1. All proceeds support the Harvard Square Homeless Shelter.

Chocolate Sampling Event

Saturday, Jan. 29: 1 p.m. to 2 p.m.

Deguglielmo Plaza, 27 Brattle St.

Chocolate samples will be from local restaurants and shops, including Om, JP Licks, Crema Café, and Henrietta's Table.

Harvard Square Chocolate Tour

Sunday, Jan. 30: 10 am. and 1 p.m.

This two-and-a-half hour walking tour highlights the history and life of chocolate in Cambridge.

Harvard Museum of Natural History

All weekend.