A winding, blood-red tunnel of hardened lava navigable by foot.

This elegant arc of a waterfall marks a religious turning point.

Local lore says this 700-year-old tree has sacred and medicinal properties.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.

A surreal monument depicting a five-armed giant supporting a toppling cylinder seal.

This ancient stone bridge is a hub for daredevils.

The largest monastery in Singapore is home to a crematorium, a college, and one of Asia’s largest indoor Buddha statues.

A serene space tucked amid the skyscrapers of Hong Kong's bustling financial district.

An abandoned hotel in the highlands of Bali is shrouded in stories of ghosts, curses, and corruption.

Giant reed houses made in the marshes of Southern Iraq.

The oldest hall in Iceland was written of in the Sagas and features a centuries-old escape tunnel.

This oceanside Reykjavik spot is speckled with recycled sculptures and large stones.

A national collection of Communist-era musical posters.

Ruins of a late 1950s Polish ski jump ramp in the middle of the city.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

This quaint Hungarian railway system is operated exclusively by children between the ages of 10 and 14.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Bible stories are brought to life with gloriously cartoonish kitsch in this South American theme park.

Massive stele returned to Ethiopia after 70 years in Rome.

Sloth rehabilitation center in the jungle of Costa Rica.

One of the largest underground systems runs under Canada's largest urban center.

Canada's oldest railway tunnel is illuminated in a rainbow of color as it passes under the streets of this small city.