A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

One of the last of the great 1920s movie palaces is a Floridian Greco-Spanish-Persian dreamscape.

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

A beautiful footbridge with over 2,000 glass sculptures along the walls and ceiling.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This massive airship factory is so large that it has its own indoor weather.

The 25th President's marble casket can be visited in this classical Ohio tomb.

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

This black shoreline is made up of exploded lava particles.

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

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.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The abandoned palace stands as a wounded but proud beacon of Afghan hope.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

A particularly disconcerting tribute to Irish martyrs.

The world's tallest box hedge is found in a delightful garden.

Behemoth, cannon-like telescope operated by generations of Irish earls.

One of Ireland's most infamous prisons for rebels including men, women and children.

A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

An 1814 castle that hosts an exhibit of "explorabilia".