Oldest synagogue in the United States.

Built to bless whalers before their voyages, this Massachusetts church now features a ship-shaped pulpit.

The Cape Cod house that whaling built.

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

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

This mill on Lake Erie appears to shrink as a viewer approaches thanks to an optical illusion.

The seat of Buffalo government is a gorgeous Art Deco palace.

This seemingly cursed monument is dedicated to one of Canada's great war heroes.

A beautifully designed asylum was resurrected as a hotel and art center with a ghost story or two.

The site of William McKinley's tragic assassination is only marked by an underwhelming boulder.

A preserved factory in the "Home of the Carrousel" is now a museum dedicated to the classic wooden ride.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

Toxic waste disaster that founded the Superfund program.

Genesis of modern hydroelectric power.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

A scenic fort on the harbor protected Philadelphia from an attack that never came.

The highest point in Delaware is located under a trailer so this marker across the street will have to do.