Spend the night in this formerly abandoned traditional Scottish village.

This little valley along Highway 1 is engulfed by thousands of lilies during the spring season.

This park built on a former fortress has a reputation for romance.

Legend has this precariously placed rock was placed by giants. Science has another explanation.

A boulder in the Churchyard of Down Cathedral marks the legendary burial place of "The Apostle of Ireland."

The conquistador's former fortress is the oldest preserved colonial building in the Americas.

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

This fantastical house shaped like a seashell brings aquatic design to architecture.

The famous artist couple lived and worked here, in two different houses separated by a bridge.

Frida Kahlo's childhood home, now a museum of her life and works.

Part bookstore, part café, and part forest.

This "City of Books" holds a museum, library, and the complete personal book collections of five of Mexico's greatest thinkers.

A bronze statue of the famed Prussian naturalist commemorates the year he spent in Mexico.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

This museum houses two of Mexico's most impressive Aztec monoliths.

Underneath the historic center of Mexico City, the remains of a temple dedicated to the Aztec god of the wind.

On a cornerstone of the City Museum is the head of a monstrous serpent stolen from an Aztec pyramid 400 years ago.

Diego Rivera hid various people and symbols in his first large-scale mural project.

An unusual slot canyon in the Aztec/Navajo Sandstone has a cross-section like an inverted old-fashioned keyhole.

The final resting place of the world's first nuclear reactor.

This coffee shop lies hidden beneath a historic church.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.