One of the foremost Sherlock Holmes collections is hidden away at a Toronto library.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

A memorial to the tens of thousands of Irish who fled to North America during the Great Famine.

The writing studio of an American adventure author, built in the style of a medieval castle.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

A popular place to pick up prehistoric coral fossils from the time when Michigan was an ocean.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

Strange physical sensations and optical contradictions keep visitors coming back for more.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

The only surviving prototype for Buckminster Fuller's house of the future.

A Beaux-Arts triumph set to become Ford's innovation campus

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

The city is full of whimsical portals to another world.

Turnip-shaped island just off the Michigan shore in Lake Huron.