Valletta’s outdoor theatre stands within the ruins of a 19th-century opera house.

Malta’s oldest sea water distillation building is now an architectural anomaly on the Sliema waterfront.

Despite the name, these small saltwater swimming pools have nothing to do with the Romans.

This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.

These clocks tell time in a theological sense.

This abandoned building, which is the second-largest structure on the Maltese island of Comino, has a complicated past.

Overshadowed by other, more famous Maltese catacombs, this ancient burial chamber has one of the best examples of a ritual agape table.

This unique building in the main square stands out among the city's typically Baroque architecture.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

Dynastic Home of the De Piro Family.

A centuries-old forgotten underworld lies beneath Malta.

This church is named for one of the most dramatic tales in the early Christian church.

A pixel art killer whale is frozen mid-leap in this Vancouver square.

The ruins of an important pilgrimage destination for worshippers of a Maya fertility goddess.

One of Mexico's least-visited archaeological sites is tucked away inside a theme park.

One of Mexico's youngest major cities still holds on to this structure representing its short modern history.

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

Kitschy nautical-themed bar has offered mermaid shows and underwater ballet since 1956.

Remarkably realistic Florida shoal bass "swim" inside this large globoid sculpture.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

You may get stranded and everyone's peeing in the water, but at least there's cocktails!

A macabre sculpture museum in the capital of Haiti fuses human bones with broken metal to create challenging contemporary art.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.