This partially completed dam was simply abandoned after nearly destroying the city it was built to service.

Canada's oldest railway tunnel is illuminated in a rainbow of color as it passes under the streets of this small city.

This now abandoned arch bridge was constructed during the Great Depression.

Hidden within the waterfront hills resides this dilapidated military stronghold.

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

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

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

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

A garden in Lisbon filled with giant porcelain creatures.

Sip cherry liqueur at a bar dating back to 1840.

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

Explore a remarkable 35-hectare sculpture garden located an hour outside of Lisbon.

This star-shaped military outpost is now simply trying to protect itself from neglect.

A majestic hotel for dreamers rises from the center of a fairytale wood.

Ancient catacombs form the foundation for this Rococo orgy of a church.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

These 400-year-old ruins are all that's left of the monastery where Ines de Castro was assassinated by the King of Portugal.

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

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

The history of drinking is told through 1,800 cups, chalices, and glasses at this exhibit.

Some 4,000 individual tiles make up this striking blue billboard from the golden age of air travel.

An ancient tomb that still stands in Portugal.

Europe's largest collection of matchbox designs is a fascinating exploration of the cultural history of the world.