A quiet museum preserves the extraordinary relics, processional treasures, and centuries-old traditions behind Catania's famous Feast of Saint Agatha.

This elegant black and white striped arch is emblematic of Catania's resilience to natural disasters

Wedged between streets and buildings, this ancient Roman theatre could seat 7000 spectators.

A monumental private palace behind an unassuming facade, with astonishing interiors including a rococo ballroom.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

Built in the aftermath of a devastating earthquake, this cathedral is one of the finest examples of Sicilian Baroque architecture.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

Italian cave with exceptional acoustics and an unsavory history.

Built on a medieval synagogue, this church has a burial crypt, tunnel system, and Jewish ritual bath hiding deep underneath.

The Swedish flag over this small naval fort signals that the nation is at peace.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

This grisly exhibit houses skeletons and weapons from a devastating 14th-century clash.

Hidden in plain sight, Sweden's official ordnance datum is now abandoned.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Stockholm's deepest subway station is also a stunning ecological wonder.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

A Stockholm metro station is home to an escalator that is not only the longest in Sweden, but among the longest in the world.

A concrete mushroom that divided Stockholm residents for nearly a century.

This pair of unsuspecting buildings are in fact the very first modern skyscrapers in Europe.

A museum that dives into Sweden’s maritime past through preserved shipwrecks and interactive exhibits.