A semi-scholarly approach to sex.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

Sniff the Titan Arum's rotting flesh.

Springtime is go time for this repurposed shack and the fish it venerates.

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

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

This opera house along the banks of the Connecticut River has two Tony Awards to its credit but it’s never staged a single opera.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

A free display of artistic lifesize dinosaur sculptures in a backyard garden.

Underground tunnels remain beneath this abandoned mental asylum.

This sprawling 18th-century cemetery features unique and beautiful gravestones, including one shaped like a tree.

The Hudson River School comes alive at this palatial estate.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

This historic graveyard monument is dedicated to a tragic victim of witch trial hysteria.

Ornate and macabre headstone in one of the country's oldest cemeteries.

Grave of the man allegedly responsible for a series of infamous murders in Boston in the 1960s.

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

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

New York City's smallest piece of private property.

The first piece of public art dedicated to LGBT rights.