Best tour booking sites for Europe: Viator, GetYourGuide, Tiqets and the official sites

Best tour booking sites for Europe: the short answer

For Europe, use Viator, GetYourGuide or Tiqets for tours and tickets, and use the attraction's own site where it names an official seller, as the Vatican Museums do. Viator, GetYourGuide and Tiqets listed one Tower of London ticket from $50 to $51.14 on October 13, 2026, and Viator's Louvre Museum Masterpieces Guided Tour was from $71.74 per person that day.

Pick GetYourGuide for Best Price Matching on a European tour, which pays the difference if the same activity is cheaper elsewhere, with exclusions. Pick Tiqets for museum and attraction entry tickets, which its terms price per ticket and per person with applicable taxes included, though a venue may add a local tax. Pick Viator for guided tours and day trips. Official prices in local currency are not printed here, and no rival price was read for Rome, Paris or Barcelona.

One London ticket on three sites

Historic Royal Palaces, the body that runs the Tower of London, is the operator named on Viator, GetYourGuide and Tiqets for this ticket. Viator listed it from $51.14 per person, GetYourGuide from $50 per person and Tiqets from $50.24. Tiqets printed no basis word beside its figure. These are from-prices before a date is chosen and no checkout total was read, so none of the three is called cheaper.

All three pages state a full refund up to 24 hours before. Tiqets' Tower of London page lists 17 options, and the cheapest, from $24.46, is a 40-minute river tour, not an entry ticket.

Rome, Paris, Barcelona and Amsterdam: what the official sites say

Each attraction's own page sets its booking rules, as read on October 13, 2026, unless dated.

• Rome, Colosseum: ticket sales with a compulsory time slot open 30 days before the visit, per the park's page as captured on September 26, 2026.
• Rome, Vatican Museums: the museums name tickets.museivaticani.va as their only official online ticket site and warn about look-alike domains.
• Paris, Louvre: reservations are required for all visitors from October 17 to November 1, 2026, with listed exceptions, and the museum warns against tickets that claim to let you jump the queue.
• Barcelona, Park Güell: tickets must be bought in advance and online.
• Amsterdam, Anne Frank House: visits need an online ticket for a time slot, and tickets are released each Tuesday at 10am CEST for a visit six weeks later.

What to book in advance in Rome turns the Colosseum and Vatican rules into a short list.

Skip-the-line tours, boat trips and cooking classes on Viator

Viator's city pages showed these card prices on October 13, 2026, each card carrying a Free Cancellation tag, while each listing shows its own policy. Viator's Terms of Use quote prices per person unless a listing says otherwise.

• Barcelona: Sagrada Familia Skip-the-Line Guided Tour and Tickets, from $61.
• Venice: Murano & Burano Islands Guided Small-Group Tour by Private Boat, from $50, with the card noting that price varies by group size.
• Florence: Pasta Cooking Class with Unlimited Wine, from $28.
• Athens: Acropolis and Parthenon Guided Walking Tour, from $39.

Those are card figures before a date or option is picked. The best tour booking sites page compares all seven ways to book, and best tour booking sites for London goes deeper on the Tower ticket.