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

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

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

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

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

A slice of central Asia in the middle of Berlin.

A microbiologist-chef is slinging noodles with hyperlocal Nordic ingredients.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

One of the few places to grab a beer in Fez is a former British consulate.

A disused quarry turned lake in the middle of a residential district.

A former reservoir that was only recently discovered after more than 60 years of disuse.

Originally a meeting place for foreign correspondents and war reporters, the FCC remains an atmospheric spot for sunset drinks in Phnom Penh.

Acres of salt crystal pyramids dry in the sun along Thailand's "salt road."

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

This sublime architectural marvel is a rare example of an expressionist church.

A small Portuguese cottage formed between boulders in the countryside.

Perhaps the most spectacular grotto along the Algarve coastline.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

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

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

A devastating landslide accidentally created this tourist hotspot.

The only Malaysian food truck in Italy slings tangy chicken satay that even Italians love.

Hidden in a high mountain cave, this hermitage dates back to the ninth century.