The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The underground sanctuary of a mysterious ancient cult.

The yawning maw of this pagan visage is said to bite off the hands of liars.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A Hawaiian stairway to heaven—that you can't climb.

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

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

This WWII plane died a quiet death, and is now a garden eel playground.

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

This blowhole is supposedly caused by a trapped monster.

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

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

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

A true treehouse near Hawai'i Volcanoes National Park.

Watch the newest land on the planet form before your eyes.

What remains of the summer palace of King Kamehameha III.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.