Historic medieval fortified city in southwest France.

There is a strange little carving of a person seemingly crushed by a pillar behind the remains of St. Thomas Aquinas.

The majestic, sacred tree is represented on this piece of public infrastructure.

A beautiful example of 18th-century engineering still standing tall.

A massive yet whimsical statue pays homage to the art and joy of "flight."

This hotel is an amazing example of the Escuela Tapatía de Arquitectura movement.

This historic Mexican convent is home to a tree that grows crucifix-like thorns.

This pre-Hispanic apartment complex also includes ancestral paintings that point to its military past.

One of Monterrey's oldest buildings is perched atop a hill boasting impressive views of the city.

This grand yet little-visited tomb seems almost carved into the hill it sits on.

Dating back to the second century, vestiges of prehispanic mural paintings are found in this underground palace.

After becoming locally extinct, this esteemed avian now flies free in the forests around the ancient ruins.

The spectacular subterranean collection includes dazzling minerals, including a piece of "kryptonite."

This Mexico City subway station will make you feel like you've been transported to the London Underground.

These subterranean models show Mexico City's central square during three different eras.

This feature of the city's aqueduct has achieved numismatic fame thanks to its appearance on Mexican banknotes.

Climb through the life of a Mexican hero as you ascend a 130-foot statue.

This ornate church designed by a self-taught architect is an eclectic masterpiece in the heart of Central Mexico.

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

Meat and seafood are part of the frozen dessert flavors available at these legendary street stands.

The enigmatic skull gazes out over the ruins of a once-great Mayan city.

One of Mexico's rare urban natural parks features waterfalls and a working fish farm.

The underground mall's skylights look like they could be part of a spaceship.

Come face to face with the ferocious visage of the serpent-headed mother goddess of the Aztecs.