A hidden three-foot-wide house separates these two regal churches.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

The stunning interior of this Gothic church is covered in ornate gold details.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

High winds can make this one scary landing.

A charmingly old-fashioned reminder of the historic building's former life.

The ruins of New Zealand's largest classical-style church.

This aluminum “stairway to heaven” has impaled at least a couple of birds.

Enjoy coffee and cake while viewing antique medical equipment at this unique cafe.

This quiet island in the middle of a bustling city is actually a volcano dotted with Māori ruins.

The "Rocky Horror Picture Show" character has a hidden camera that broadcasts people doing the "Time Warp."

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

New Zealand's only running funicular railway.

New Zealand's west coast is one of the best places in the world to view these large seabirds.

The platform atop this verdant volcano was built with the help of a royal elephant.

A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.