This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

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

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

A bizarre house filled with an astounding array of collections.

Half of a waterfall goes into the river while the other half seems to disappear.

A giant granite cross remembers missionary Father Frederic Baraga, and his safe passage across an angry Lake Superior.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.

The watery grave of an impractical idea.

This water tower has been a staple of the Rochester skyline since 1931.

Its collection contains relics from the devastating disaster that set the town ablaze.

The famed architect designed this Minnesota gas station of the future with a lookout tower.