A timed entry ticket reserves your access to an attraction for a specific one-hour or two-hour window. You must arrive during that window. Arriving early means waiting outside. Arriving late means you forfeit the ticket and the attraction turns you away.
Timed entry exists to limit crowding at sites that face physical capacity constraints or conservation concerns. The Sagrada Familia in Barcelona has a fixed interior capacity. Machu Picchu has a UNESCO-mandated visitor limit of 5,600 per day. The Alhambra in Granada limits Nasrid Palace access to 400 people per half-hour slot.
These attractions have eliminated or severely restricted same-day walk-up access:
| Attraction | Country | Advance Booking Required |
|---|---|---|
| Alhambra (Nasrid Palaces) | Spain | 2 to 6 weeks |
| Colosseum (Arena Floor) | Italy | 1 to 3 weeks |
| Sagrada Familia | Spain | 2 to 4 weeks |
| Machu Picchu | Peru | 3 to 8 weeks peak season |
| Angkor Wat (Sunrise) | Cambodia | Book the day before minimum |
| Vatican Gardens | Vatican | 2 to 4 weeks |
| Stonehenge Stone Circle | UK | Opens 6 months ahead; sells out in hours |
| Half Dome Trail (permit) | USA | Lottery system; 4 months ahead |
| Cappadocia Hot Air Balloon | Turkey | 2 to 4 weeks |
Every attraction has one official booking URL. Third-party resellers charge 15% to 50% more for the same ticket. Before booking, search for the attraction's official website and book directly.
Official booking platforms for major sites:
Enter the attraction name to get a complete booking guide with the official platform URL, advance booking window, pricing and what to do if the time slot you want is sold out.
Get Booking GuideAsk Ticket QuestionsMany attractions have general admission and a separate premium ticket for the most-visited section. Booking the cheaper general ticket and hoping to access the premium area does not work.
Examples:
When buying your ticket, read the inclusions list. Confirm which sections your ticket covers before completing the purchase.
Timed entry systems are strict. The Alhambra scans tickets at the Nasrid Palaces entrance and denies entry to anyone outside their 30-minute window. The Colosseum Arena Floor scans for entry within the designated hour.
Arrive at the attraction 15 minutes before your time slot starts. Account for:
You forfeit the ticket. Most timed entry attractions do not offer refunds or exchanges for missed slots. A few offer limited flexibility:
If you have a legitimate reason for missing your slot (transport disruption with documented evidence), contact the attraction's customer service within 24 hours. Some attractions offer date changes in documented cases of public transport failure.
Not every attraction requires advance booking. Many popular sites still accept walk-up visitors:
For any attraction you plan to visit, check the official booking page 72 hours before arrival. If same-day slots are available, you retain the option to book on the day. If slots are gone, you know in time to adjust your plan.
Popular timed entry attractions release cancellation slots regularly as visitors cancel. These appear at random times, often within 48 hours of the date.
For the Alhambra, Colosseum and Sagrada Familia, check the official booking page at 8am and 8pm on the days before your visit. These are the times when cancellations most frequently appear. Booking cancellation slots on the official platform is always safer than buying from a third party.