This shrine to bovine consumption and all things fast food is a slice of culinary history both rare and well done.

These ruins are all that remain of what a Spanish barrack that likely housed a quarry overseer, masons, and stone cutters involved in the construction of the Castillo de San Marco.

People escaping slavery may have hidden inside a corpse vault.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

World's first "penitentiary," meant to be humane, drove men insane.

Built in 1899, this luxurious home was part of one of the first gated communities in Los Angeles.

Although he donated over 3,000 acres to Los Angles, Griffith's life was marred by controversy.

This nondescript tunnel has been featured in a number of iconic movies, from “Roger Rabbit” to “Back to the Future.”

Ride the subways of yesteryear.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

Stalactites and stalagmites in a beautifully lit cave.

Amazing meticulous gardens of personal wood carvings, Hydrangea, Canna, and many other flowers.

The remains of a 12th-century chapter house in Golden Gate Park.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Tiki luxury on Nob Hill.

Visible below the waves are memorials to the city's Gold Rush dead.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

An invitation-only museum of items natural and bizarre, arcane and exotic.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

Olfactory delights in San Francisco's Botanical Gardens.