
Colosseum
The Colosseum is the famous ancient Roman amphitheater in Rome, Italy, and its typical retail price refers to the standard entry ticket for visitors.
Estimated value as of 2026 · Source: Official ticket sites and guides (2025-2026 prices)
Fun Fact
The standard €18 ticket grants access to three major sites (Colosseum, Roman Forum, Palatine Hill), making it less than €6 per site.
Price History
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Mars Rover
The NASA Perseverance Mars Rover is a flagship-class robotic explorer designed to search for signs of ancient microbial life on Mars, launched in 2020 and landed in 2021.

Declaration of Independence
The original 1776 document declaring American independence from Britain.

The Cullinan Diamond
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Crown Jewels of England
A collection of royal regalia including crowns, scepters, and jewelry estimated at over $3 billion.