This historic streetcar system has been running since the 19th-century.

Elaborate tile work in this railway station tells the story of Portugal.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

This now abandoned restaurant provides some of the most amazing views of Lisboa.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

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

The world's oldest bookshop still in operation.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

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

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

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 United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.