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

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

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

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

The Corinthian columns that towered over Abraham Lincoln’s inauguration stand proud.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

At 207 feet, one of the world's longest continuous escalators.

The site of the climactic scene from the classic horror film is now a historic landmark.

The "lovely red Vega" of the legendary record-settling pilot.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

Home to items never before seen by the public.

Meet manatees face-to-face at this zoo for native species.

A circus legend leaves an unexpected endowment.

Electrical pylon in the shape of Disney's beloved mouse.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

A fortified city, home to a remaining population of five families