A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

Brisbane's manmade urban beach has enough water to fill five Olympic-sized swimming pools.

These ancient artifacts are a testament to the enduring significance of the bull in Spanish culture.

This embalmed man is one of the best preserved mummies from the Canary Islands.

A reproduction of the famous prehistoric cave paintings is hidden underground at the National Archaeological Museum.

Strange masks and obscure costumes are housed in this old Madrid corrala.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

Commonly acknowledged as the only public monument to the Devil himself.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

An ancient Egyptian temple in the middle of Madrid, Spain.

This influential Renaissance-era library was once the haunt of kings and monks.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

2300-year-old Roman road connecting the empire.

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

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

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

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

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

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.