These otherworldly caverns form Earth's oldest known cave system.

A forlorn fishing village on the coast of Labrador, full of shipwrecks and Spanish gold.

This waterfront museum in Maine is dedicated to the history of the smoked-herring trade.

A rustic house where intellectuals and investors tried to put an end to Cold War nuclear armament.

Working wool mill used as the exterior for the mill in the 1990 horror film "Graveyard Shift."

A small Canadian town founded as a refuge for Loyalists following American Independence.

A complicated, forgotten beacon of hope for thousands of immigrants, "Canada's Emerald Isle" lies in ruin.

A rare opportunity to drive across the ocean floor.

Rusty red sands line the shores of this Canadian Province.

This historic Canadian jail was once the longest operating prison in the country and is now open for people to incarcerate themselves.

Go inside the house that inspired L. M. Montgomery to create one of literature's most beloved heroines.

Three buildings constructed of over 25,000 multicolored glass bottles.

This sprawling collection hides many charms.

The highest point in Maine is a grand gift to the state citizens that also happens to be one end of the Appalachian Trail.

This former prison now houses a lovely library devoted to Quebec's oft-maligned English-speaking history.

A 400-square foot model of historic Quebec is the playing field for a state of the art light and sound show.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

This chilly Canadian hotel has a four-month lifespan due to the unusual material it's made of.

The only town in the world with two exclamation points in its name.

This underground power plant looks more like a super-villian's lair than a public work.

This three-chambered cave is the only protected natural bat hibernaculum in Quebec.

This artful dam holds back a crater-made reservoir that can be seen from space.

A lake formed in the basin of a massive impact crater takes the shape of an unbroken ring when viewed from above.

A Saxony castle houses one of the largest and most outstanding mineral collections in the world.