Leo I's User Profile - Atlas Obscura
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Rome, Italy

Basilica of San Crisogono

Remnants of a 4th-century church with vivid medieval frescoes and ancient sarcophagi hide beneath this old basilica.
Lagoa, Portugal

Benagil Caves

Perhaps the most spectacular grotto along the Algarve coastline.
Candelo, Italy

Ricetto of Candelo

A perfectly preserved example of a fortified Medieval ricetto.
Amsterdam, Netherlands

Oost-Indisch Huis

The former headquarters of history's oldest megacorporation.
Milan, Italy

Torre Velasca (Velasca Tower)

A brutalist gem towering over the heart of Milan.
Venice, Italy

Church of San Giacomo di Rialto

According to tradition this is the oldest church in Venice, but its actual age is a mystery.
Comacchio, Italy

Ponte dei Trepponti (Trepponti Bridge)

This uniquely designed bridge served as the city gate for Comacchio.
Imola, Italy

Piazza Matteotti

This Renaissance square was at the center of Leonardo da Vinci's map, the first ichnographic ever.
London, England

The Coronation Stone

Legend has it that seven Anglo-Saxon kings were coronated on this stone, located in the appropriately-named town of Kingston.
PlitviÄŤka Jezera, Croatia

Plitvice Lakes

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

Sarcophagi of the Basilica of Sant'Apollinare in Classe

Numerous stone coffins from different centuries, lined up in a sixth century basilica.
Pisa, Italy

The Camposanto

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.
Rome, Italy

Arch of Gallienus

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.
Rome, Italy

Basilica di San Clemente

A Nesting Doll of Churches.
Rome, Italy

Domus Aurea

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

Basilica of Santi Quattro Coronati

A fortified medieval basilica on the Caelian Hill preserves extraordinary frescoes and one of Rome's most beautiful hidden cloisters.
Rome, Italy

The Sweating Cenotaph at the Archbasilica San Giovanni in Laterano

Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.
Rome, Italy

Cappella di San Zenone (Chapel of Saint Zeno)

Its interior is adorned with some of the best examples of early Christian mosaics.
Rome, Italy

Temple of Minerva Medica

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.
Haarlem, Netherlands

Bloemen Route

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.
ChumkopĂł, Mexico

Cenote Angelita

A flooded Mexican cave that hides a river beneath the water.
Rome, Italy

Casa dei Crescenzi

A rare example of a medieval house in Rome adorned with a melancholic inscription.
Pompeii, Italy

Thermopolia of Pompeii

Ancient snack bar of the Roman Empire re-opened.
Pompeii, Italy

The Brothels of Pompeii

Erotic art covers the walls of the largest ancient pleasure palace.