This niche museum devoted to ancient religious artifacts is shaped like the very thing it displays.

This rock in the middle of a river in Jayuya contains dozens of Pre-Columbian Taíno petroglyphs.

The crumbling remnants of this 19th-century quarantine hospital hint at the touristy island's darker past.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

This colorful gate stands as an entrance to the walled city of Old San Juan.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

The ruins of the first Spanish settlement in Puerto Rico.

The final resting place for Bermuda's British military, including a man who died of sunstroke.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

Storms, funding, and in-fighting have kept this Bermuda church from ever being completed.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This exhibit allows visitors to wander through the interior of a replica Ice Age glacial cave.

The second-largest (of only two in the world) large particle collider is the underdog of experimental physics.

This striking arch, one of the first architectural elements constructed in Prospect Park, was recently restored to its original glory.

This Catskills museum preserves stumps from the earliest known fossil forest on Earth.

Fossilized sea bottom and lime quarry.

A bar, burger joint, and arcade housed in a late 19th-century church building.

A fire station-turned-church-turned-museum dedicated to the work of seminal light artist Dan Flavin.

This sprawling collection of saintly relics includes such fascinations as wood from the Cross of Jesus and threads from Mary's veil.

The shared home of a utopian commune that practiced "free love" a century before the hippies.

This peaceful gem in upstate New York was chosen as the future home of the 14th Dalai Lama's Library and Museum.

One of the largest festivals of flowers in North America takes place, appropriately, in the Flower City.

This overlooked gem outside Niagara Falls preserves and celebrates Iroquois culture.

A large camera obscura, constructed entirely from digitally fabricated components.