The unassuming structure was part of a Major League Baseball stadium.

A piece of baseball history is preserved in a Pittsburgh parking lot.

Travel through the wholesome amusements of yesteryear at this charming miniature village.

This Chinese-style quartz sundial was saved in its final hour.

The facade of this relic from the Klondike gold rush is decorated with over 8,800 pieces of driftwood.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

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.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

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.

A tunnel of hardened lava along Maui’s famous Road to Hana.

This black shoreline is made up of exploded lava particles.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

These ancient sacred grounds granted amnesty to those who managed to reach them.

This Hawaiian cattle ranch acts as a museum devoted to the island cowboys that predate the wild west.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

A controversial memorial at the place where Captain Cook met his violent end.

A popular rock that acted as a waymarker for American pioneers.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

The narrowest house in America is seven feet of pure spite.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.