This tranquil park with a spiral viewing tower is an off-the-beaten-path area where renowned people have planted a small grove of trees.

This royal shrine and cemetery is hidden amidst modern public housing.

Singapore's Ang Mo Kio Town Garden West is a social hotspot for songbirds and their humans.

Two panes of the massive Cold War artifact are on display at the National University of Singapore.

Singapore's last surviving traditional village is hidden among giant skyscrapers and modern infrastructure.

One of the largest Chinese cemeteries outside of China spent years overgrown and forgotten.

A Baroque mansion with ties to legendary magicians and alchemists.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

The hidden lair of an alchemist rediscovered in a 2002 flood.

The highest pedestrian bridge in Singapore looks like a series of undulating waves rising between two public parks.

Macabre astrological automaton clock dating to the late 1400s.

Countless grotesque faces stare out from this eerie Prague art wall.

A Jenga-style cylindrical tower of books that appears to go on forever.

Two stunning 17th-century libraries and a cabinet of curiosities.

Microscopic scenes; some call it novelty, some call it art.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

The first museum in the world devoted to sexual gadgetry.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

In between two buildings in Ljubljana, medieval tunnel to nowhere.