These flying foxes dangle from the trees around the library like fuzzy black fruit.

Singapore's landscaping project is home to 18 incredible Supertrees.

This $62 million dollar temple was erected to house one little dental fragment of religious history.

Singapore's oldest Hindu temple.

A manifestation of modernist architectural ideas, this massive, multi-purpose building was one of the first of its kind in Southeast Asia.

A two-inch thick solid brass rod that extends an astounding one kilometer straight into the earth.

These paved rills bring freshwater into Altstadt and could spell wedding bells for whoever stumbles into the waters.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

The great Danube river starts here.

One of the most easily accessible examples of the rare 1960s UFO houses.

Europe's oldest still-operational tea farm also boasts a spectacular view.

Amsterdam's former hotspot for public executions and dissections.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

Op-art architecture designed for happiness.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

A marvel of Byzantine engineering under the streets of Istanbul.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.