5,000 skulls in memorial to those killed by the Khmer Rouge.

Though it was originally dedicated to the Hindu god Shiva, Baphuon was converted to a Buddhist temple in the 15th century, complete with a massive hidden statue.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Started as a kitchen garden, now the second largest botanical garden in the world.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

A small but charming botanical garden that contains many exotic plant species.

These 400-year-old ruins are all that's left of the monastery where Ines de Castro was assassinated by the King of Portugal.

The Voodoo Superstore of the world.

An enormous public square and parade ground built to celebrate Ghana's independence.

A Yiddish theater turned movie house turned rock and roll landmark turned gay disco turned bank.

For almost a century, this East Village newsstand has served egg creams to beats, hippies, punks, and everything in between.

Tucked in the back of this amazing antique store is an important piece of medical history.

A dazzling work by a Pop art legend hangs in one of the world’s busiest subway stations.

An interim housing alternative to FEMA trailers that is designed for densely populated areas during recovery and rebuilding following a natural disaster.

With a history dating back to Victorian times, this architectural gem is a rare New York tourist haunt worth visiting.

A wooden rollercoaster that still delivers a thrill.

The only subway station in the city that still makes use of gap fillers.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

A touching tribute to the "Queen of Soul."

The place where Dvořák composed some of his most famous works.

An aptly-named street near the birthplace of the modern LGBT rights movement.

New York's southernmost subway station is whimsically wavy.

Red frames showcase remnants of one of New York's original subway stations.