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

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.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Remnants from a time before electricity.

Legend holds that this knife serves as a chilling reminder of the deadly rivalry between two local builder brothers.

In 1988, jazz legend Chet Baker fell to his death from a window of this hotel facing Amsterdam Centraal.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

Amsterdam's former hotspot for public executions and dissections.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

The former headquarters of history's oldest megacorporation.

The same water that fills a luxury resort’s pools feeds these free hot springs in the rainforest.

This wildlife refuge is home to more than 200 species of birds, as well as monkeys, lizards, and other wildlife.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

Architectural monsters are devouring this palace's every door and window.

Inside this building is another country within Rome, a sovereign entity without a physical territory.

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

The Pope’s secret escape route.

According to the legend, this structure was built in a single night with the help of the devil.

This kaleidoscopic mural shows Bob Dylan throughout his transition from young troubadour to Nobel laureate.

A whimsical sensor instrument for Minneapolitans to play on their walks to work.

A toweringly silly piece of modern art has been delighting locals since the 1980s.