Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

Giant topiary dog once played a role in a terrorist bomb plot.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

The oldest Roman lighthouse still in use.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

The world's largest wooden structure.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

An ancient Egyptian temple in the middle of Madrid, Spain.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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

This tower once served as a radar station during the Cold War.

This ship offers visitors the chance to spend the night aboard a former floating hospital for fishermen.

A small sanctuary carved into the mountainside near the tallest point in continental Portugal.

An icon of the city, this chapel features an amazing dome ceiling and offers panoramic views.

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

A glacial valley filled with silver beech trees in the mountains of Portugal.

A deer-headed statue that brings together a 12th-century legend and big wave surfing.

The "Little Ones," show Portugal in full miniature splendor.

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

This castle has links to Portugal’s founding and struggles for independence.

This giant sculpture made of trash is a critique of society's wastefulness.