A true treehouse near Hawai'i Volcanoes National Park.

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

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

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

The island of Lanai in Hawai'i is a paradise for cats and cat lovers.

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

Harlequin costumes, signed scripts, and armor-wearing puppets.

Ever hear of the Milazzo Cage?

Among the busts of heroes of the Roman Republic of 1849, there is also a statue of a boy and his dog.

A large replica of a monumental Roman inscription is located on the side of this museum.

This medieval church in Rome was almost destroyed following a terrorist attack in 1993.

This small Roman arch was transformed into a dwelling by the founder of the Trinitarian Order.

An ancient Egyptian obelisk is now used to commemorate fallen Italian soldiers.

The Italian revolutionary's legendary wife is portrayed on horseback waving a gun and holding her child in this memorial on the Janiculum.

This small church was constructed over the ruins of three temples dating to the Roman Republic.

This hermitage celebrates the legend of Emperor Constantine's healing from leprosy.

An unremarkable wooden wheel built into the side of one of Rome's oldest hospitals was part of a policy to reduce infant exposure.

A small cell adjacent to this church was once the bedroom for a renowned saint.

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

A sculpture serving as an homage to Pope John Paul II.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

A secret hatch containing two parchments was discovered in this statue over 40 years after its installation.

An ancient Roman temple first dedicated to an emperor's wife is now a church.