One of the first sewers in the Americas.

Learn the history of Dominican rum production.

A remarkable range of flora and fauna are represented in this Dominican nature preserve.

This tribute to Sunderland's mining past stands outside the home of its football club.

The final resting place of Christopher Columbus - or possibly someone else.

Collection of fossils, plants, and ancient animals encased in amber.

Hundreds of pieces of ancient Taíno art cover the walls of this Caribbean cave system.

Renowned restaurant tucked in a cave once occupied by buccaneers.

An eccentric German artist built this weird and wondrous castle packed with shocking sculptures and alien art.

This trio of Dominican cave lakes comprise a colorful biosphere of natural life.

These ancient rock graves were featured on the cover of a Black Sabbath compilation album.

A flower grows on this giant stone that is said be able to control minds.

Thermal springs underneath the seabed provide the heat and bubbles for these beachside natural hot tubs.

This historic hiding place, often used by people escaping slavery, is a testament to a heroic struggle for freedom.

The hike to this stunning waterfall on a black sand beach is not for the faint of heart.

This mountaintop lake bubbles and steams in a perpetual boil, thanks to its direct link to the Earth's interior.

These 90-year-old murals of local kings, Vikings, and outlaws hide in plain sight in a beautifully baroque shopping arcade.

This living labyrinth made entirely of thorns is filled with art.

This tiny tropical village was sick of anonymity so the locals made this sign, which actually changed the name of the town.

Shipwrecks, ruins, and turtles are all that remain on this haunting Caribbean ghost island.

One of these two land speed record-breaking vehicles went so fast it shattered the sound barrier.

This building was once a town hall, a fire station, a prison, a dairy market, and the target for two marksmen.

This two-towered gateway is all that remains of the unluckiest pier in the world.

The world's largest collection of artifacts from our history of industrial gas use is hard to simply pass.