Thor Mentor's User Profile - Atlas Obscura
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Taingy, France

Carrière d'Aubigny

This former limestone quarry is now a subterranean wonderland of grand stonework.
Zadar, Croatia

Sea Organ

A musical instrument played by the sea.
Greece

Sami

A spectacular cave and a beguiling lake.
Segovia, Spain

Segovia Aqueduct

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'
Nervesa della Battaglia, Italy

Ai Pioppi Playground

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.
Tarragona, Spain

Pont del Diable

Stunning Roman aqueduct used for 1900 years and still standing.
Caraș-Severin, Romania

Bigar Waterfall

Moss and stone turn this waterfall into an otherworldly liquid veil.
Plitvička Jezera, Croatia

Plitvice Lakes

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.
Ronda, Spain

Ronda, Spain

Three bridges and one giant canyon make up this fantastic Spanish settlement.
Calcata Vecchia, Italy

Calcata

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.
Saturnia, Italy

Terme di Saturnia

Geothermal waterfalls in Tuscany.
Risoul, France

Plan de Phazy

Since ancient times these picturesque springs have been providing bathers with healing waters.
Alghero, Italy

Neptune's Grotto

Stalactites and stalagmites in a beautifully lit cave.
Neuheim, Switzerland

Höllgrotten Caves

These spooky and unusual stone formations create an underworldly landscape.
Italy

Carezza Rainbow Lake

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.
Dénezé-sous-Doué, France

La Cave aux Sculptures

Figures of unknown origin carved into the surfaces of underground caves.
Sintra, Portugal

Quinta da Regaleira

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

Blue Cave of Bisevo

An ethereal glowing blue ocean cave in Croatia.
Matavun, Slovenia

Skocjan Caves

This massive subterranean fissure is known as the "underground Grand Canyon."
Psichro, Greece

Dikteon Cave

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.
Kato Kastania, Greece

Kastania Cave

This remarkable cave was discovered after a shepherd watched bees enter and exit through a small fissure.
Kumistavi, Georgia

Prometheus Cave

This neon lit Georgian cave claims to hold the boulder Prometheus was chained to.
Hinterbrühl, Austria

Seegrotte

This series of underground chambers contains Europe's largest subterranean lake that is slowly drained each day.
Thessaloniki, Greece

Thessaloniki Train Cemetery

Thousands of rusting train cars have been slowly falling apart on the edge of Greece's second largest city.