A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

The oldest covered railroad bridge still standing in the United States.

One of the first intercontinental ballistic missile sites in the United States.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

This historic train station has been converted to a locomotive themed hotel.

There's more contention than one might expect from cherry pie pans.

In the main dining room, a nine-ton boulder caps the fireplace designed by local architect Earl Young.

Unique Michigan homes look like something out of Tolkien's "The Lord of the Rings."

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

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

A place for ship-lovers to watch the passage of freighters traversing the Great Lakes while learning about their history.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

Futuristic apartment blocks are the backdrop for Montreal surfers hangin' ten on the Habitat '67 standing wave.

A swaggering, monumental souvenir of the most extravagant party Montreal’s ever thrown.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

A mysterious spot where the laws of gravity seem not to apply.

Iconic rock formations that allow for exploration during high or low tide.

A quarter mile off the coastal tip of Maine you'll find the "Beloved Island" of Franklin Delano Roosevelt.

The 32nd president's sprawling cottage sits on an island enclave jointly managed by the U.S. and Canada.

This candy-striped tower is the farthest east you can go in the United States.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

This historic mini-suspension bridge was swept away once but is now here to stay.