Beach instrument turned bed and breakfast.

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

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

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

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

This art installation pays homage to the famed stones of European lore.

Two buildings named after their windows that make it look like a sea of television sets plastered to a wall.

A pair of connected skyscrapers form this symbolic gateway.

Different sections of the Zemun Fortress were built in the 14th and 15th century as a response to the advance of the Ottoman Empire.

An Art Deco Icarus statue adorns this abandoned gem of Yugoslav Modernist architecture.

One of Serbia's oldest luxury hotels and a nostalgic echo to Yugoslavia in the state's former capital.

A small memorial to a deadly night in Serbia that shook the world before it was swept under the rug.

Considered an architectural abomination by some, this metal-clad building is known as 'little red riding hood' by locals.

A retro Yugoslav congress, cultural, and business hall built in the 1970s, with an iconic world clock.

An eerie fountain commemorating the death of a boy that sparked a small war in the 19th century.

Memorial to the victims of the Holocaust in Serbia.

One of Belgrade's most beloved animals.

A Serbian church lit by chandeliers made of weapons.

A misnamed well, with a deep dark past.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

Arguably Belgrade's only example of pure Art Deco architecture.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

The unusual sculptures are believed to be powerful political symbols.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.