The enigmatic and seldom visited ruins of a Mayan city-state.

The ruins of an ancient Mayan city, beautifully preserved and only accessible by boat.

The Acropolis of this little-visited Mayan archaeological site offers great views of Chiapas’s Lake District.

Three small rooms in the jungle house the most elaborate and intact murals of the Mayan world.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The final resting place of the poets Shelley and Keats.

A medieval house with mysterious alchemical inscriptions on its facade

This piece of a Renaissance-era Spanish castle remained lost for decades.

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

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

At least seven hues of blue and turquoise make this freshwater lagoon unique.

Stained glass windows bathe this botanical garden in cosmic light.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Hotel designed around a 16th century Mexican bullring.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

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

Buried next to Pompeii, this lesser-known Roman villa was the opulent vacation home of Emperor Nero's wife.

Pompeii's less famous neighbor is still revealing her secrets.

This magical-looking island is notorious for the misfortunes suffered by its owners.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.