This volcano in the Philippines is believed to have miraculous healing powers.

Smoked mummies housed in mountainside caves.

Hidden deep within a Filipino jungle is an incredible waterfall that plunges into a dazzling blue-green pool.

This replica of the Greek structure is in the heart of Nashville.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

With nickel-steel armor and three-inch thick bullet resistant windows, FDR's train was a rolling fortress.

The timeworn "Yankee Stadium" of the fastest game in the world isn't going anywhere.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

The world's oldest soul food restaurant is also one of its best.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

The world's second largest single-dish radio telescope, once used to contact E.T.

This former railroad bridge was named after the great river that once flowed below it.

Years of neglect and nature took a toll on this 19th-century lighthouse.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

Once part of a dam servicing an early 19th century grist mill, the tucked-way falls are a tricky-to-find urban oasis.

The Cold War-era "underground Pentagon" is a sprawling subterranean hideaway for the Defense Department.

In which a local geological marvel becomes a quaint roadside attraction.

Beautiful views of the surrounding hills and birds of prey can be found at this sanctuary.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

This massive sycamore tree has been labeled as one of the largest in the state.

These trees are living witnesses to events that inspired poet Walt Whitman’s service during the American Civil War.