This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

These small, triangular, colorful houses are a staple of Madeira Island.

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

Step back in time at this 19th-century kiosk.

Get in line for Lisbon’s most famous sandwich.

Eat the ultimate iteration of Portugal's most beloved pastry.

A 19th-century mansion houses the largest collection of gin in the European Union.

Europe's oldest still-operational tea farm also boasts a spectacular view.

A cluster of granite granaries perched on stilts.

When Azorean green tea meets volcanic hot springs water, a luminous brew is born.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

The world's oldest bookshop still in operation.

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

Houses are tucked between, on, and underneath giant boulders.

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.

Museum of amazing old toys and automata.

Infamous and now demolished panopticon prison built by its former inhabitants.

Hidden well off the beaten path in Catalonia is this crumbling medieval castle that is slowly being covered in graffiti.

This abandoned mansion has a window for every day of the year, and is a temple for ghost hunters.

Cursed swimming pool left abandoned is now a favorite of filmmakers and ghost hunters.

One of the most photographed buildings in a city known for its Modernista architecture is an abandoned squat.