These mosaic designs promise a cure for headaches, toothaches, and colds.

Iconic red and white plaques show the creative names invented to navigate the city streets.

A cenote sitting in the middle of a parking lot shows the Yucatán Peninsula at its most urbanized.

A house mixing elements of Chinese and Mexican architecture stands as a tribute to the Chinese-Mexican bishop who lived here.

A less famous, short-lived meeting spot of the Inklings.

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

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

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

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

Its sunny hues are believed to have inspired the town's color palette.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

A mysterious, abandoned Chinese building in Mexico pays homage to the area's East Asian immigrants.

These winged Maya figures are the subject of speculation and conspiracies.

Iran's "Rose Garden Palace," built during 131 years of rule by Qajar kings, consists of 17 stunning structures.

The last four extravagant street signs of London's historic banking street.

The site of London’s first coffee house has been serving refreshments of one kind or another for 360 years.

These Victorian era devil sculptures were designed to spite a local vicar.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

This tiny museum's sizable collection is jammed into a former underground public toilet.

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

One of the oldest family businesses in Reykjavík serves lamb-based hot dogs.

The first woman to become a member of the parliament of Iceland.

A monument dedicated to the civil uprisings that took place during the Pots and Pans Revolution.