Where condemned pirates met their grisly end at the gallows on the River Thames.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Famously misunderstood wonder of the ancient world

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

A wonderful display of arts and crafts handmade by local artisans in the Southern Appalachians.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

Known as the “Official Greeter of Juneau,” this dog still welcomes ships and their passengers to Alaska.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Ancient pueblos built into the base of a natural canyon wall.

A spiritual vortex among the red rocks in Sedona.

This historic national park is covered in the stunning ruins of red rock pueblos.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

An homage to everyone's favorite prehistoric cartoon family.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

See massive fossils that are over 200 million years old in northeastern Arizona.

This shrine to the patron saint of Alaska sits on a small tidal island and was built from the land’s own beach stones.

The ruins of this Alaska gold mine form a gorgeous ghost town.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."