This enormous World War II relic is one of the largest wooden structures in the world.

One of two side-by-side totem pole parks dedicated to educating visitors on Tlingit history and culture.

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

This 19th century train workshop is a treasure trove of railroad history.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

The California capital city once stood 10 feet lower than it does today.

The largest wax museum in the southern hemisphere features a grizzly chamber of horrors.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

Activists are fighting to preserve these unfinished highway ramps as a tribute to the citizen revolt that halted their construction decades ago.

The unbelievably opulent home built for an infamous newspaperman.

A poignant memorial to a young boy whose death spurred a dramatic increase in organ donations in Italy—dubbed the "Nicholas Effect."

This former luxury resort in Kaua'i is now an abandoned relic.

Once home to over 8,000 exiled Hawaiians suffering from Hansen's Disease.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

This monster board rode a monster wave to break two world records.

One of the only known surviving coconut palm trees in the entire state.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

This one-time health resort was used by aristocrats around the world.

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

This giant temperature attraction created some giant electric bills.

The largest dune field in the Mojave offers a chance of hearing the 'singing sands.'