This classic steam-powered train takes tourists on a nostalgic trip around the Connecticut River Valley.

These gardens recreate unique and endangered Michigan habitats.

For centuries, this large Roman villa remained hidden thanks to the eruption that buried nearby Pompeii and Herculaneum.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

A preserved portion of an ancient Athens barrier is displayed in a hotel basement.

Preserved portions of Athens's ancient defenses are on display in a subterranean parking garage.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

One of the few working locomotive roundhouses in the United States.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

One of the most dazzling dioramas at the American Museum of Natural History is also one of the oldest.

The largest collection of historic military firearms in the United States.

Romans decided this 16th-century "talking statue" was so ugly, they named it after a primate.

This morbid scene depicts the Darwinian drama of death on the African savannah.

The grandiose interior of this bar speaks to its past as home to famous jewelers and railway offices.

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

This impressive scene portrays the elusive forest giraffe of Central Africa.

A stunning Victorian abbey and walled garden on a lakefront.

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

These medicine cabinet staples are part of the museum's collection of everyday objects.

This taxidermy scene brings the struggle for survival in the Indian jungle to a quiet corner of a Manhattan museum.

This poignant display is now a memorial to these regionally extinct species.

Creating this diorama spurred naturalist Carl Akeley to begin advocating to protect the apes.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.