The pitch is archetypal: the Goretorium is actually "the Delmont, " a '60s-era hotel whose owners make sure the guests enter -- and never leave.

CNN: Year-round haunt spooks Vegas

Manny Pacquiao and Juan Manuel Marquez will enter the ring Saturday night at the MGM Grand Casino and Hotel in Las Vegas for the fourth and presumably final time (so says Pacquiao).

FORBES: Pacquiao Vs. Marquez 4 Has Legacies And Millions At Stake

And no one has to inquire about the reason for the searches every hotel employee and every hotel guest must submit to each time he or she wants to enter the building anew.

CNN: Barack Obama slept here

Decades later, segregation still ruled America, and when Sports Illustrated invited Winkfield to a reception at the Brown Hotel in Louisville in 1961, he was told he couldn't enter by the front door.

CNN: The forgotten godfathers of black American sport

You simply enter the time and place of the trip, maybe adding extras like whether you need a hotel, a rental car or a dinner reservation.

FORBES: Magazine Article

Applicants to enter Schengen must provide a ream of documents, including proof of health insurance, travel tickets and hotel reservations.

ECONOMIST: Visas in Europe