Where one of the worst train disasters in the country took place, leading to upgrades in rail safety.

Journey through various trails to discover a land before time along the Chazy Fossil Reef.

Less a museum than a bizarre fantasy world created by artists and engineers.

This mosaic-covered bar is brimming with curated curios.

One of two identical monuments marking the sites of military training encampments in Peoria, Illinois.

An antiquated German apothecary on Chicago's North Side.

One of two lighted lanterns hung in the church belfry on the eve of the Revolutionary War to warn that the British were on their way.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

This 19th-century former train station’s unusual roof shape earned it a rather witchy name.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

Smallest house in Toronto sits on a lot meant to be just wide enough for cars to drive through.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

Willy Wonka would love this weird half-a-home.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

This extensive nuclear fallout shelter built from 42 school buses could house 500 people in its tunnels.

This 20th-century mansion plays a key role in one of Puerto Rico's greatest novels.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

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

Years of neglect and nature took a toll on this 19th-century lighthouse.

The highest peak in Puerto Rico is home to a rare fern that can only be found on six trees at its summit.

This former sugarcane transport tunnel is now a portal to a lovely beach.

The bat-covered home of one of the world's most popular brands of rum is located on a tropical Art Deco campus.

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