This elegant neoclassical garden is a peaceful oasis in the middle of the Nepalese capital.

Nobles would stage mock naval battles on this large lake at the Royal Palace of Caserta.

The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

This historic square in Nepal is home to temples dating back to the third century.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

This mysterious and unique painting is filled with symbolism.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

This magnificently macabre shield shows the power of chivalrous love in medieval times.

The fairy tale castle of the "fairy-tale king."

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

The sumptuous ceiling was one of the last things Charles I saw before his execution.

The last of Amsterdam's original sea level markers remaining in place.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

This centerpiece of the Hollywood & Highland shopping center is a recreation of a long-lost movie set.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

More than a million titles fill the labyrinthine shelves of this prestigious private library.