Tourists are sharing the outrageous charges from their European vacations. From $22 to cut a cake to a $700 lunch, here are the wildest fees so far.

• Tourists are calling out restaurants in Europe over excessive fees.
• One restaurant in Italy reportedly charged a family $22 to slice a birthday cake.

Tourists visiting Europe this summer are taking to TripAdvisor to bemoan the rising cost of travel.

Over the past few weeks, some scathing reviews have gone viral, as people describe fees for slicing cake or cutting a sandwich in half. Other visitors are calling out restaurants in touristy areas for what they perceive as price-gouging.

CNN recently reported that a woman was charged $2 to warm her baby's bottle in the microwave.

From being charged for slicing a piece of cake to unexpectedly pricey lunches in Greece, here are the wildest things tourists have shared they paid for while traveling in Europe this summer so far.

$22 to slice a birthday cake

A family celebrating a birthday in Palermo, Sicily, was charged 20 euros — about $22 — to have their cake cut into 20 pieces, the New York Post reported.

According to the Post, the family was dining at an undisclosed restaurant in Sicily, an island at the tip of Italy's "boot." On top of spending $130 on pizza and drinks, the group was charged a "20 X Servizio Torta" fee, which translates to "20 x cake service."

Nearly $800 for a light lunch in Greece

Earlier this week, an Italian tourist took to TripAdvisor to write about their experience paying 711 euros — roughly $774 — for lunch at DK Oyster in Mykonos, Greece.

According to the customer's TripAdvisor post, they ordered three orange juices, an Aperol spritz, and a "medium portion of squids and shrimps, after being invited to sit on the establishment's daybeds for free.

It's not the first time DK Oyster has been in the spotlight. Earlier this year, the New York Post reported a couple was charged $860 for four crab legs, a salad, and two mojitos at the same restaurant.

A representative for DK Oyster did not immediately respond to Insider's request for comment, made outside of regular working hours.

$2 to split a sandwich

An Italian café went viral earlier this month for charging a customer 2 euros, or about $2.20, to cut their sandwich in half.

In June, a diner at Bar Pace, a winery and café near Lake Como, posted a photo of their receipt to TripAdvisor, saying they were eating with another person, and wanted to share the meal.

"Unbelievable but true," the reviewer wrote.

The owner, Cristina Biacchi, defended the additional fee while speaking with the Italian newspaper La Repubblica.

"We had to use two plates instead of one and the time to wash them doubled, and then two placemats," she said.

"To cut it in half took us some time, and work must be paid for," Biacchi added.

A representative for Bar Pace did not immediately respond to Insider's request for comment, made outside of regular working hours.